Currently if group is set to invisible Krita still processes layers inside that group when objects below are modified. If group is invisible processing filters inside groups with pass through could be disabled to improve performance.
Can you please check if it's still the case? Or maybe you could add a test file and say how you can see that they are processed unnecessarily.
As far as I can see from the code and testing, the bug has been fixed :) There are no updates when I paint under a pass-though group with adjustment layers.