User in group cannot edit a file in shared folder with markdown editor

Nextcloud version: 26.0.1
Operating system and version: FreeBSD 12.4
Apache or nginx version: Apache
PHP version: 8.1

Steps to replicate it:

  1. Create as Admin a Group called GROUP A
  2. Create USER X
  3. Create USER Y and put this user in GROUP A
  4. Create as USER X a folder called EXAMPLE and share the Folder with GROUP A (with all rights, edit, create, delete etc.)
  5. In the folder EXAMPLE, create as USER X a file called FILE-A.md
  6. Browse as USER Y in the shared folder EXAMPLE and click on the file FILE-A.md
  7. Instead of opening the .md-File in the markdown Editor, the Browser Dialog shows up and ask: You habe choose to open: FILE-A.md -- What should Firefox do with this file? -- Open with or Save File.

If USER X click on the same file, it opens in the markdown editor.

Question: What could be the reason that USER Y cannot edit the file remotely in Markdown?

Only thing i noticed is a Javascript Error as USER Y :

Uncaught TypeError: c is undefined
o index.js:166
linkTo index.js:24
<anonymous> files.js:33
<anonymous> files.js:64
<anonymous> files.js:64
[index.js:166:44](webpack:///text/node_modules/@nextcloud/router/dist/index.js)
o index.js:166
linkTo index.js:24
<anonymous> files.js:33
<anonymous> files.js:64
<anonymous> files.js:64

Does it have anything to do with that?

Ok my fault. The text app was lmited to another group in the app settings.

So now any user of your group GROUP A can also edit the text file ?

Yes indeed.