I just noticed a new entry in QGIS 3.12.0 layer properties: Masks
However, it looks just blank, so I was wondering what it is for and how to use it. Searching the web and QGIS changelog did not return any results. The changelog for 3.12 seems to be not online yet.
I also enabled "Mask" within Labels-Menu, but still nothing to see:
Anyone has a clue about this?