Eclipse Community

basilisk52-g4.8.win32-git-20260314-3219d2d-uxp-5b447a5fd9-xpmod
The icon in the top-right corner of the software is too small, making it very inconvenient to use.

I cannot replicate on "normal" versions of XP, 7, and 10.
Are you using any kind of "theme hacks" not *officially* part of your OS (which you didn't even mention "is", btw)?