[BUG] Preview non-header font size depends on editor font size when using editor highlighting styles also for preview

[benjiwolff]

Expected behaviour

Just like with "Use editor highlighting styles also for preview" turned off: All text in the panel that the mouse is hovering over is affected. Other panels are unaffected.

Actual behaviour

In the editor:
Changes the font size in both the editor and the preview. However, it does not affect headings in the preview.
In the preview:
Changes only the header size in the preview

Steps to reproduce

I'm on macOS 15.3.1

[pbek]

Can you please post the output from the Debug settings in the settings dialog? You just need to paste it here.
And is there any useful log output if you enable the log panel (see Window / Panels)?
Please make sure you also enable debug logging in the log panel by right-clicking on the panel and selecting Debug in Options.
The issue dialog in the help menu can help you with all of that.

And can you please describe step by step what you did?