2.83 vs 2.90 tiny visual elements highlighting

[APEC]

I want to discuss about highlighting in 2.90, is it me (my theme broke somehow) or is it for all?
Before (2.83.5) and after (2.90.0):

and for sliding back and forward to see this changes (2.83 and 2.90):

[jenkm]

https://developer.blender.org/T79615