Creo creates snaplines after copy/paste annotations that were on a snapline

The initial unexpected behaviour we noticed was that when we moved annotations on a drawing, those objects suddenly jumped across the drawing, usually to the bottom left corner. It seemed that Creo would snap to snaplines we didn't create. Later we incidentally zoomed in to that corner only to find some very short snaplines actually existed, but nobody knew why they were there so the snaplines were deleted.

After a while, and also on new drawings, the snapping behaviour and those snaplines reappeared.

Today we found that when you copy and paste an annotation (we tested it with a simple note) on the same drawing, the result is as expected. However, when you copy a not that is positioned on a snapline and the paste it, you get those small snaplines in the bottom left corner, and the pasted notes aren't even on those snaplines.

The small snaplines cannot be moved, the length cannot be changed, ...

Creo shouldn't create snaplines when pasting annotations, not even very small ones as they are even harder to find and create a lot of confusion...