Preview Button missing form Edit page

[kuene]

The problem

Since the Upgrade to Libertarian the Preview Button has gone missing on the Edit Page. Only Save and Cancel remain. See screenshot.
I am not able to find any Doumentation on how to activate or deactivate it.

Version of DokuWiki

Release 2025-05-14a "Librarian"

PHP Version

PHP 8.2.29

Webserver and version of webserver

No response

Browser and version of browser, operating system running browser

Firefox

Additional environment information

No response

Relevant logs and/or error messages

[fiwswe]

The »Toggle syntax ⬌ visual editor« button is non-standard. So you are probably using some plugin to modify the editor.

Find and disable that plugin, then check if the problem persists. If it doesn't then it's an issue with the plugin, not with DokuWiki.

BTW: The latest release is 2025-05-14b "Librarian".

[kuene]

The plugin is prosemirror plugin and should have no effect. I disabled it and still the same Issue. See screenshot.

[fiwswe]

I'm running multiple DokuWiki 2025-05-14b "Librarian" instances both with the default template and with the sprintDoc Template and I am not seeing this effect.

I still suspect some plugin may be the cause of your problem. Disable anything not standard and see if the problem goes away.

Did you check the error, deprecated and debug logs in the Admin section?

[kuene]

There was nothing to be found in the logs except some warnings.
But i found the offending plugin it is:
https://www.dokuwiki.org/plugin:bpmnio
they have already a Bug-Report there.
Color-Of-Code/dokuwiki-plugin-bpmnio#64

Thanks for your help :-)