no more display of MD files

[punkyard]

Steps to reproduce

1. start iOS Nextcloud App
2. open any .MD file
3. no content displayed
4. open PDF file
5. display ok
6. open PNG
7. display ok
8. open .mov
9. display ok

Expected behaviour

when opening .MD files, the text editor should start and the text should be displayed, or at least the 'read' mode.

Actual behaviour

Logs

Please ask for specific logs from iOS in comments and the manner to access them - thank you 

Reasoning or why should it be changed/implemented?

NC becomes useless on the phone - NC Notes is also useless

Environment data

iOS version: 15.8.3

Nextcloud iOS app version: 5550

Server operating system:

Web server: Apache in AiO 960 - behind reversed proxy NGinx

Database:

PHP version:

Nextcloud version: 29.0.7 AiO 960