Issue with Upper form are not loaded when put BP in Draft - Unifier 19.12.10.1

Hi all,

I'm working on Unifier 19.12.10.1 development env. and when put the BP in draft to modify the upper forms, the page keeps spinning without uploading the forms.

This issue happens more often with multiple BP and does not matter what is the BP style, and not sure what is the cause.

Does anyone have a similar issue?

Any suggestion would help.

Thanks in advanse