Upload / create from iOS App 4.6.0.19 to Nextcloud 25.0.2 - if groupfolder > no files shown

Hi there,
i use the latest Apps from Nextcloud, Server Version and iOS.
i have a user who is added to a group which is bundled to a groupfolder.

I can upload and create files with the iOS App to the user root. But short after this the files are not display anymore in the App.
The App log is always shows success.

i have try this by another user which is added to the same group and groupfolder. Upload/create a folder - nothing shown. And another user who have no group. Files/Foldes are there.
On the WebUI i can see the uploaded and created files but not in the iOS App when a user use a groupfolder.

May be anybody have an idea.

Cheers
André

edit the EDIT:
some log:

1.2.3.4 - test_group [13/Jan/2023:22:44:25 +0100] "GET /status.php HTTP/1.1" 200 1313 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - - [13/Jan/2023:22:44:25 +0100] "GET /csrftoken HTTP/1.1" 200 1376 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0 AppleWebKit/605.1.15 Mobile/15E148"
1.2.3.4 - - [13/Jan/2023:22:44:25 +0100] "GET /csrftoken HTTP/1.1" 200 1375 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - $ACCOUNTNAME [13/Jan/2023:22:44:24 +0100] "POST /ocs/v2.php/apps/notifications/api/v2/push HTTP/1.1" 404 1807 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:24 +0100] "POST /ocs/v2.php/apps/notifications/api/v2/push HTTP/1.1" 404 1807 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - ACCOUNT2 [13/Jan/2023:22:44:25 +0100] "POST /ocs/v2.php/apps/notifications/api/v2/push HTTP/1.1" 404 1807 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:25 +0100] "PROPFIND /remote.php/dav/files/$ACCOUNTNAME HTTP/1.1" 207 2031 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:29 +0100] "PROPFIND /remote.php/dav/files/$ACCOUNTNAME/ HTTP/1.1" 207 1338 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_nogroup [13/Jan/2023:22:44:25 +0100] "POST /ocs/v2.php/apps/notifications/api/v2/push HTTP/1.1" 404 1807 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:25 +0100] "GET /ocs/v2.php/cloud/user HTTP/1.1" 200 1916 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:29 +0100] "GET /ocs/v2.php/apps/dashboard/api/v1/widgets HTTP/1.1" 200 1045 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - - [13/Jan/2023:22:44:29 +0100] "GET /index.php/avatar/test_group/384 HTTP/1.1" 200 3252 "-" "Nextcloud/4.6.0 (it.twsweb.Nextcloud; build:19; iOS 16.2.0) Alamofire/5.6.4"
1.2.3.4 - - [13/Jan/2023:22:44:30 +0100] "GET /apps/user_status/img/app.svg HTTP/1.1" 200 898 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:29 +0100] "REPORT /remote.php/dav/files/test_group HTTP/1.1" 207 762 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:29 +0100] "GET /ocs/v1.php/cloud/capabilities HTTP/1.1" 200 3117 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:30 +0100] "POST /ocs/v2.php/apps/notifications/api/v2/push HTTP/1.1" 404 1114 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - $ACCOUNTNAME [13/Jan/2023:22:44:30 +0100] "POST /ocs/v2.php/apps/notifications/api/v2/push HTTP/1.1" 404 1114 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - ACCOUNT2 [13/Jan/2023:22:44:31 +0100] "POST /ocs/v2.php/apps/notifications/api/v2/push HTTP/1.1" 404 1114 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - - [13/Jan/2023:22:44:31 +0100] "GET /apps/activity/img/activity-dark.svg HTTP/1.1" 200 686 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:31 +0100] "GET /status.php HTTP/1.1" 200 1016 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_nogroup [13/Jan/2023:22:44:31 +0100] "POST /ocs/v2.php/apps/notifications/api/v2/push HTTP/1.1" 404 1114 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:31 +0100] "GET /ocs/v2.php/apps/user_status/api/v1/user_status HTTP/1.1" 200 912 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:31 +0100] "GET /ocs/v2.php/apps/files/api/v1/directEditing HTTP/1.1" 200 1127 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:31 +0100] "PROPFIND /remote.php/dav/files/$ACCOUNTNAME/Bfkfk HTTP/1.1" 404 953 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:31 +0100] "GET /ocs/v2.php/apps/files_sharing/api/v1/shares?reshares=false&shared_with_me=false&subfiles=false HTTP/1.1" 200 874 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:31 +0100] "GET /ocs/v2.php/cloud/user HTTP/1.1" 200 1223 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:31 +0100] "PROPFIND /remote.php/dav/files/test_group HTTP/1.1" 207 1550 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:32 +0100] "GET /ocs/v2.php/apps/dashboard/api/v1/widgets HTTP/1.1" 200 1045 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:32 +0100] "REPORT /remote.php/dav/files/test_group HTTP/1.1" 207 762 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:32 +0100] "PROPFIND /remote.php/dav/files/test_group/ HTTP/1.1" 207 2140 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:32 +0100] "GET /ocs/v1.php/cloud/capabilities HTTP/1.1" 200 3117 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - - [13/Jan/2023:22:44:32 +0100] "GET /index.php/avatar/test_group/384 HTTP/1.1" 304 846 "-" "Nextcloud/4.6.0 (it.twsweb.Nextcloud; build:19; iOS 16.2.0) Alamofire/5.6.4"
1.2.3.4 - test_group [13/Jan/2023:22:44:32 +0100] "GET /ocs/v2.php/apps/files_sharing/api/v1/shares?reshares=false&shared_with_me=false&subfiles=false HTTP/1.1" 200 874 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:32 +0100] "GET /ocs/v2.php/apps/user_status/api/v1/user_status HTTP/1.1" 200 912 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"
1.2.3.4 - test_group [13/Jan/2023:22:44:32 +0100] "GET /ocs/v2.php/apps/files/api/v1/directEditing HTTP/1.1" 200 1127 "-" "Mozilla/5.0 (iOS) Nextcloud-iOS/4.6.0"

EDIT2:
i deleted the groupfolder and readded them - now it works. But i hope that will be a constant state