file changed via intend not instantly uploaded (Collabora-Online-Android, KeePassDX, KeePassDroid)

[kolAflash]

⚠️ Before posting ⚠️

• [x] This is a bug, not a question or an enhancement.
• [x] I've searched for similar issues and didn't find a duplicate.
• [x] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
• [x] I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

1. upload a ODT or KBDX file to a Nextcloud
2. login with the Nextcloud Android app and tap the file
3. open the file (ODT => Collabora-Online-Android; KBDX => KeePassDX or KeePassDroid)
4. make exactly one change to the file and save it (press "back" until Collabora closes or press "check-mark" / save in KeePass*)

Expected behaviour

Changed file will be uploaded fully automatically.

Actual behaviour

File is changed on the Android file system, but not uploaded by Nextcloud.

Android version

13

Device brand and model

Fairphone 3+

Stock or custom OS?

Stock

Nextcloud android app version

3.34.0

Nextcloud server version

31.0.10.2

Using a reverse proxy?

No

Android logs

logs.txt

Server error logs

Additional information

I'm not 100 % sure if this is a bug or a missing feature.
Because I opened the file from inside the Nextcloud app, I expect Nextcloud to recognize changes instantly. The Dropbox-448.2.8 Android app seems to do this (tested with Collabora and KeePassDX). So it should be possible in general.

I know, I can configure a folder to 15 minutes 2 way synchronization. But that's a far too long time for me.

Tested on two Fairphone 3+.
OS: /e/OS-3.0.4-t (Android-13, microG), Nextcloud + NextcloudDev from F-Droid
OS: Stock Fairphone Android-13 with GooglePlay services, Nextcloud from GooglePlay

.

Maybe related:

• #14945
• https://github.com/Kunzisoft/KeePassDX/issues/1444

[PhilLab]

Can confirm. My workaround for Collabora was to tap the file a second time in Nextcloud and then close it again without any changes. Maybe that somehow hints towards the root cause?