I've just upgrade to eclipse Version: 2025-12 M1 (4.38.0 M1)
I'm running ubuntu 25.04 (amd Ryzen 7 3700X x 16) on gnome/wayland.
If I hover over an element near the top of the screen the tooltip box appears (above the element) but the content is grey.
If I scroll the element down the page the tool tip displays and the content is visible.
This has been a long standing problem (I've just upgraded from 2023-something - which had the same problem).
I understand that there is a work around by using X but it feels like we should have this fixed given X is disappearing and I suspect the majority of users are now running wayland.