Sometimes it may be hard to tell, but I can see it pretty clearly (compare it next to a text label for clarity differences) – when you see it once, you can’t unsee it, if you have the eye for this stuff:
Not a huge deal, but it’s a pretty easy fix – the resolution of these icons are pretty poor (considering they are already small)
the flat ones are actually nice – it’s just blurry, as if the src image is only 5px.
I also have a 1440p (QHD) monitor, so it’s possible that it looked fine before this – they could be using 1:1 resolution icons (when it’s recommended to downscale from a higher resolution so it doesn’t look crusty on higher-definition monitors) - eg, using exactly 24px for a 24px area instead o
Also, that help icon isn’t flat unlike everything else – suddenly a Windows 95 help icon next to modern flat icons. It’s out of place~
It’s a small fluff thing, but @ Unity, you guys may wanna consider swapping out with better-resolution icons. There aren’t actually that many core icons – it shouldn’t take long. Arrows, C# script icons, settings icon, slider icon, and help – that’s most of the core.