Random placement of key signatures (Me Too)

In order to investigate, we would need you to attach your score and give precise steps to reproduce the problem.

If you're looking for help removing courtesy key signatures, please ask in the Support forum - and again, attach your score, because the specifics depend on several factors (different possible staff settings, etc).

I am having the a similar issue, both in imported version 2 scores and newly created version 3 scores. Whenever measure spacing is changed, for any reason, I get courtesy key signatures appearing randomly throughout the score. This happens if I manually change spacing, if it automatically changes spacing because of transpositions or adding lyrics, all the time. You can see it happen in the attached score if you manipulate the spacing by selecting all and using the shift+} command on the keyboard or menu or if you make the electric bass part visible (thereby changing the spacing of the melody part. It even happens if I change the name of the part from piano to melody.

I cannot reproduce in 3.0.2 or current master. Could be that the problem fixed itself on save/reload. Might be related to #279925: Permanent courtesy time sig and key sig before system/page break when toggling in Continuous View and/or Parts or another known/fixed issue.

If you can still reproduce when loading that score again in 3.0.2, please give precise step by step instructions.