iOS video downloads instead of playing

Nextcloud version (eg, 20.0.5): 21.0.5
Operating system and version (eg, Ubuntu 20.04): Unraid 6.9.2

The issue you are facing:

Running Nextcloud on my Unraid server and I have a bunch of video files on it which I used to play on my iOS devices via the Nextcloud app. Lately for some reason it only just downloads them not like before where it opened the video player like I want to. Via the browser it still opens up the video player. It happens on both my iPad and iPhone.

Is this the first time youโ€™ve seen this error? (Y/N): Y

Which app version? Which iOS version?

Please see Issues ยท nextcloud/ios ยท GitHub for related issues.

Related:

Nextcloud Liquid version app 4.0.6.0, both devices on iOS 14.8