Alternate path switched unexpected in tree

I have just a tree with a couple of alternate paths for testing purposes. when I first imported it, it showed the current state selected. When I reopened the tree it unexpectedly switched to not preferred pathsthe tree The selected paternal grandfather had been a Keeler, now it is showing the not preferred Reformat line, for example

I’m not sure what happened. It is showing Keeler now. If it happens again, please let me know.

It shows Keeler because I switched it back. but I’ll report if it happens again