I had a project open, it might have been an import via music.xml, and did some cleaning up. There was a 3/4 Time signature at the end of the last barline of that flow, and I was trying to get rid of this unnecessary bit. There was also a D.C. instruction at the last barline. So I selected and deleted this time signature. It was gone - at the same time the initial time 3/4 signature of the first bar vanished, too. Strange, but ok., I reinstated it at the beginning of the flow and, whoosh, the same time signature appeared at the end of the flow.
Did I come across a bew feature, I didn’t know about yet, or is this an unintentional glitch caused by some strange .xml import?
Thank you for enlightenment 