WYSIWYG should use monospace font while editing fenced code block

[yajo]

Environment

Joplin version: 1.7.11
Platform: Linux
OS specifics: Fedora 33 Silverblue, Flathub install

Steps to reproduce

1. Open a note in markdown editor.
2. Add a fenced code block.
3. Switch to WYSIWYG editor.
4. Double-click that code block.
5. The font isn't monospace.

Describe what you expected to happen

Editing a code block should happen with monospace font.

Logfile

I think it's not relevant, since there's no error. Just a UX problem.

[dz2106]

Going to take a look at this issue.

[dz2106]

Unable to recreate issue on Windows 10

[yajo]

Here I can't avoid reproducing it 🤷🏼‍♂️

Peek.04-06-2021.15-39.mp4