9.1.4 Kalender freigeben ohne bearbeiten klappt nicht

Server
,
1

Bitte die folgenden Infos bereit stellen. Bevor ein Thread erstellt wird beachte die angepinnten "Known issues" threads und stelle sicher dass Du die letzte verfügbare Version Deines oC releases verwendest: https://owncloud.org/changelog/

Aufgrund einer Fehlernachricht, dass in /var/tmp nicht geschrieben werden kann habe ich in config.php angefügt
'tempdirectory' => '/mnt/webp/d0/95/xxxxxx/htdocs/owncloud/var/tmp',
und damit das temporäre Verzeichnis in ein Unterverzeichnis der owncloud gelegt.
Danach gab es diese Fehler nicht mehr.

Schritte zum Reproduzieren
1. Kalender freigeben an Gruppe Mitglieder
2. Gruppe Mitglieder wird angezeigt und wird übernommen
3. Haken bei "kann bearbeiten" bleibt aus
4. Wechsel zu einer anderen app und zurück zu Kalender
5. Freigabe für Gruppe "Mitglieder" fehlt
6. Erneut Freigabe für Gruppe "Mitglieder" erstellt mit Haken bei "kann bearbeiten" gesetzt
7. Wechsel zu einer anderen app und zurück zu Kalender
8. Freigabe für Gruppe "Mitglieder" ist vorhanden
9. Freigabe für Gruppe "Mitglieder" löschen, Freigabe verschwindet
10. Wechsel zu einer anderen app und zurück zu Kalender
11. Freigabe für Gruppe "Mitglieder" ist weiterhin da

Erwartetes Verhalten
Der Kalender sollte für die Gruppe "Mitglieder" nur zur Ansicht freigegeben werden.
Die Freigabe des Kalenders für eine Person oder Gruppe gelöscht werden können.

Aktuelles Verhalten
Die Freigabe erfolgt zunächst scheinbar, wird aber nicht dauerhaft übernommen.
Die Freigabe wird nur dauerhaft übernommen, wenn "kann bearbeiten" angehakt ist.
Das Löschen einer freigabe ist nicht möglich. Es kann nur der gesamte Kalender gelöscht werden.

Server-Konfiguration
Betriebssystem: vermutlich Linux (gehostet bei strato.de, Paket STRATO BasicWeb XL)
Webserver-Typ: vermutlich Apache (gehostet bei strato.de, Paket STRATO BasicWeb XL)
Datenbank-Typ: MySQL
PHP-Version: 7.0 mit PHP Bost angeschaltet
ownCloud-Version (9.1.4):
Von einer älteren ownCloud-Version aktualisiert oder neu installiert?: neu installiert
Sonderkonfigurationen (external storage, external authentication, reverse proxy, server-side-encryption):

ownCloud log (data/owncloud.log)

Bitte füge mögliche Fehler in den folgenden Code-Block, siehe https://central.owncloud.org/t/how-to-find-webserver-or-oc-logfile-enable-php-logfile/808 für mehr info.

{"reqId":"WLgmh8CoLLYAABYedakAAACa","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"no app in context","message":"Invalidating tokens older than 2017-03-01T14:04:55+00:00","level":1,"time":"2017-03-02T14:04:55+00:00","method":"GET","url":"\/owncloud\/cron.php","user":"--"}
{"reqId":"WLgmjsCoLLYAABI-P60AAAA7","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:02+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=M&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmjsCoLLYAAGvkKUgAAAAY","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:03+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mi&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmj8CoLLYAADumDUIAAALA","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:03+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mit&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmj8CoLLYAAGE@J5oAAACb","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:03+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitg&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmj8CoLLYAADrWCyYAAAJG","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:03+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitgli&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmj8CoLLYAABWsS2AAAAIA","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:04+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitgl&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmj8CoLLYAACZPW9oAAAHr","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:04+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitglie&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmkMCoLLYAACZUW9UAAAJJ","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:04+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitglied&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmksCoLLYAABWvS5cAAAIR","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:07+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitgliede&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmksCoLLYAABLwQVoAAACk","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:07+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitglieder&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgms8CoLLYAAFOKFwMAAABo","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"DeleteOrphanedSharesJob","message":"0 orphaned share(s) deleted","level":0,"time":"2017-03-02T14:05:40+00:00","method":"GET","url":"\/owncloud\/cron.php","user":"--"}
{"reqId":"WLgmu8CoLLYAABTqSL8AAAHL","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:47+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=M&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmu8CoLLYAADlaa5QAAALj","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:48+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mi&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmu8CoLLYAADllbMoAAALw","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:48+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mit&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmvMCoLLYAACBAVEsAAAKh","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:48+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitg&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmvMCoLLYAAAD3O3IAAAKt","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:48+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitgl&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmvMCoLLYAABPOREgAAAEI","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:48+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitgli&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmvMCoLLYAADTvY18AAADL","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:49+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitglie&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmvMCoLLYAAADZOp4AAAGw","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:49+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitglied&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmvMCoLLYAADheaL4AAAJv","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:49+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitgliede&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgmvcCoLLYAACBOVXgAAAK6","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2017-03-02T14:05:49+00:00","method":"GET","url":"\/owncloud\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=Mitglieder&perPage=200&itemType=principals","user":"admin"}
{"reqId":"WLgnC8CoLLYAAGcQJ6wAAADe","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"DeleteOrphanedItems","message":"0 orphaned system tag relations deleted","level":0,"time":"2017-03-02T14:07:07+00:00","method":"GET","url":"\/owncloud\/cron.php","user":"--"}
{"reqId":"WLgnC8CoLLYAAGcQJ6wAAADe","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"DeleteOrphanedItems","message":"0 orphaned user tag relations deleted","level":0,"time":"2017-03-02T14:07:07+00:00","method":"GET","url":"\/owncloud\/cron.php","user":"--"}
{"reqId":"WLgnC8CoLLYAAGcQJ6wAAADe","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"DeleteOrphanedItems","message":"0 orphaned comments deleted","level":0,"time":"2017-03-02T14:07:07+00:00","method":"GET","url":"\/owncloud\/cron.php","user":"--"}
{"reqId":"WLgnC8CoLLYAAGcQJ6wAAADe","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"DeleteOrphanedItems","message":"0 orphaned comment read marks deleted","level":0,"time":"2017-03-02T14:07:07+00:00","method":"GET","url":"\/owncloud\/cron.php","user":"--"}
{"reqId":"WLgnG8CoLLYAACrXXlkAAAC3","remoteAddr":"2003:45:4a05:ea00:d5ea:587c:146e:47a0","app":"ownbackup","message":"ownbackup created a backup to '\/mnt\/webp\/d0\/95\/5744995\/htdocs\/owncloud\/data\/ownbackup\/1488463643'","level":1,"time":"2017-03-02T14

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