Recently a core function seemed to go missing from my installation…
When out in the universe, if I hover over a rig or weapon, the context menu showing stats about the module no longer appear. This includes information about optimal weapon distances, tick rates for harvesting, what ammunition is loaded, etc.
This is a huge inconvenience, obviously. I haven’t been able to find if I hit some keyboard shortcut that disabled them but that may be what happened if such a shortcut exists by default.
Hovering over objects in space DO trigger a context information, so not every hover-item is missing.
One idea before considering a potential reinstall: Try verifying the shared cache in your launcher settings, maybe some files got corrupted or something and this should (maybe) fix that.
Have you tried resetting all game settings? I know there is one in there for “tooltip delay”. When I have that maxed I get odd tooltip behaviour (sometimes not showing at all).