[Bug/UI] Tooltips not working in combat on some monster abilities

This isn't visible in the screenshot but my cursor is over the Overpower ability - with no tooltip

If I move the cursor over the abilities, the tooltip appears briefly, then vanishes

An unrelated bug, but the crosshair is showing up as the crossed swords attack icon, as I had double clicked the slag to bring up the unit stats - this occurs on many other ui panels, the cursor never correctly resets to a 'default' cursor.