Boolean result build correction. There was a stabilization fix, which disconnected widgets. But debug the active widget can be used during validating if selection is changed. It is not correct after commit is pressed and should not influence on the feature.
So, it is more correctly to clean content of the property panel before commit.
Scenario to reproduce the problem: Create sketch(contour), create sketch(circles in the contour), create extrusion(contour), extrusion(circles), create boolean from contour-based to Cut circle-based extrusions. Apply, the circle-based extrusions are disappeared from the second control.