Minecraft: 1.20.1
Forge 47.2.1
Iceberg 1.1.18
Create 0.5.1.f

If Iceberg and Create are placed together, then in the tooltip, when you hover over an item, the text moves down one line and goes beyond the border.

I have this as well

Edit:
Seems to be fixed in dev build: Creators-of-Create/Create#6331 (comment)