Tooltip Font changed since Shadowlands?

[Lybrial]

Since shadowlands my font is no longer applied to Tooltip Med and Tooltip Small.
I could not find any changes regarding tooltip fonts here.

Does somebody know of any changes regarding the tooltip fonts?

Setting:

- _G.Tooltip_Med
- _G.Tooltip_Small

To some other font than blizzards default Fritz QT does not seem to have any effect.
Another change I have noticed since shadowlands is that whitespaces in some fonts arent
showing correctly anymore, they are showing as rectangles.