Sorry, I am maybe doing something wrong, but somehow the grid in Piano Roll disappeared completely.

As far as I know, I only installed the latest version of LMMS and chose Classic Theme, that's all. With Default Theme it works, but I don't like its colors...
In the meantime, I noticed an interesting output on my console:
PianoRoll(0x257b7d0) does not have a property named "gridColor"
AutomationEditor(0x25de320) does not have a property named "gridColor"
AutomationEditor(0x25de320) does not have a property named "gridColor"
PianoRoll(0x257b7d0) does not have a property named "gridColor"
PianoRoll(0x257b7d0) does not have a property named "gridColor"
oh my, I completely forgot to update the classic theme after #3062 happened. On the case
@binyominzeev thank you for the bug report!
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@binyominzeev thank you for the bug report!