Tooltip text is not fully shown when used in compound.

I just moved out project from 7.8.5 to 7.8.6, so that's the version of hippo. I use a tool tip in a compound, with fields horizontally lined, which is used in a document. This is sometimes causing the tool tips to become next to invisible because they are behind other elements.
This can probably be fixed in the css of the cms. Attached is a screenshot of one of the most extreme examples.