Selecting 'Disabled' does not move the block to the disabled region when there are no disabled blocks

I think the issue got fixed now, because i have tested the issue in D7 and applied above patch. The patch was successfully applied and issue got solved. Adding Screen record for the reference . Need RTBC +1

Moving carefully to RTBC (because we do not have JS tests in D7) and adding tag for the second review.

I have tested the D7 patch #27 and it is working fine. So I am moving it RTBC+1.

Tested this manually and confirmed the fix (once caches are cleared).

I don't think it's worth adding an empty update hook to force a cache clear for this change.

Thank you everyone that contributed!

Automatically closed - issue fixed for 2 weeks with no activity.