UCanvasPanelSlot::PostEditChangeChainProperty not only does not call its Super function unless the anchor node has been set, but it calls Super:: PostEditChangeProperty instead PostEditChainProperty.
Tested in 4.19.2 (CL - 4033788), 4.20.3 (CL - 4369336), 4.21.1 (CL - 4541578), 4.22 (CL - 4562192)
Expected: The function would always call its Super function
Result: The overrided function only calls its Super function when the anchor nodes have been set, even then it calls PostEditChangeProperty instead of PostEditChainProperty
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-66476 in the post.