Frame drop related to font

Godot Version

R4.4.1

Question

Framerate of my project gets immadietely and precisely halved - from 60 to 30, the moment text is displayed on my RichTextLabels. This occurs only once per source of text, does not repeat when the same text is displayed again. Once happened framedrop stays endlessly, or until label is refreshed, and then it gets right back to 60 fps, nothing inbetween.I have been narrowing down sources of this framedrop and I confirmed it is entirely dependant on font. Only one font does NOT provoke this framedrop - the one that I am using to display another text in the same project. So framedrop is avoided as long as I use one font in total for whole project. Even default godot label font creates this framedrop.

I suspect the problem lies in caching/prerendering the font. I might have tried every combination of changes in import and advanced import settings of font, but nothing helps. What should I do ??

Are you able to create a MRP? If you can, you should post that on the GitHub page for Godot as a bug / issue report so it can be fixed.

However, do check this same bug on the most recent version of Godot as well, since it might’ve already been fixed.