MC version: 1.16.5
Forge version: 36.2.4
Mod version: I've tried with 6 of them
Relics version: relics-0.3.4.jar (I've tried previous versions of this mod, too)

The tooltip is twitching like crazy. I've tried multiple LT and Iceberg versions and none seem to fix the issue.

Hey, thanks for the report. I've been working with the Relics dev on this to get the bug fixed, and have opened a pull request here: SSKirillSS/relics#57
Once that is merged this should be resolved.

The PR has been merged, so this issue should be resolved.