Scene palette BUG

I noticed a bug that I think is worth to mention if not already been pointed out.
In toon boom harmony 10.0.1 when I make a new scene palette (New_2) and then press ctrl+ Z to go a step back, the software removes the scene palette from the list but still recognizes that its been created so when I make a new scene palette again, it wont allow me to make the removed one (new_2) again and by default tries to create the following third copy instead (New_3). If saved and reopened the project, the previously removed scene palette trough ctrl+ Z will not reappear in the list.

This is a bug, right?