Mosaic 'double content in edit mode'

I have discovered a bug in Mosaic ( https://youtu.be/anaBt9RWCq4 )
Content are sometimes ‘duplicated’ in edit mode.

I am uncertain about it this is the same/case: Overlay form (properties) duplicates element ids · Issue #578 · plone/plone.app.mosaic · GitHub
( or is something else )

Update: In case you wonder: cancelling X times will show X duplicates.

If you discover bugs in a certain package, it would be the best to file an issue there. Can you create it with your video link?

I am uncertain if it is the same bug that I linked to, I have filed an issue.

You might want to check the fix here: