Master incompatibilities don't show up

Hello, after adding bold style as a new master to the Regular font the indicator for compatibility errors doesn’t show up. Have I done something wrong? (Glyphs 2.3)
With other Glyphs files the indicators still work.
Thanks for your help

Regular and Bold must have different Weight values, and there must be instances set up with values in between.

Hi Rainer, thank you. According to an older thread I tried to fix that before without results, but then I re-checked and detected some mess with the values. Now it works again.