Moderator: Please post to the area for the product your question relates to.
Thread moved to the InstallBuilder area.
We are working on adding support for Big Sur and we will make sure it's supported the moment it's officially released.
OK, thanks for the reply.
I have good news:
With no changes on our part to try to get around the issue, the display bug disappeared on Big Sur Version 11.0 Beta (20A5374i) when tested with InstallBuilder 19.11.0 based installers. That means Apple fixed the regression in the OS itself, this problem is now a non-issue for the InstallBuilder team.
We're glad to hear the issue is solved.