In Logos10 (Win11 desktop) dark mode, if you yellow-highlight a phrase, it is illegible (White on Yellow).
The workaround is to select the same phrase and change the font color to black (Black on Yellow).
Then if you look at the same text on the Mobile app, the text is White on Yellow instead of Black on Yellow.
I hope this will be fixed in Logos 11. (I hope. I hope.)