I managed to resolve the initial problem as follows:
After extensive testing, I discovered that the issue disappears when I delete a specific page from the bugged multi-page app (only that page was causing the issue).
I made a copy of the problematic page and then deleted the original.
This approach resolved the issue, and everything is now working as expected.
However, I’ve encountered another strange issue (let’s call it "Case #2").
On a different page, the modal works fine in user mode but does not function in editor mode.
I’m on the Business tier using the cloud version.
Would it help if I provided more details or context to support your testing?
That is great to hear that you resolved the initial problems!
It sounds like the page had gotten into a "corrupted state", explaining why duplicating, deleting and replacing solved Case #1 issues with the auth login.
For Case #2, yes definitely provide more details. If you have screen shots of the modal and its configuration(inspector panel) that would be very helpful for troubleshooting and resolving this.
Does the modal not open and close as expected in editor mode? or is the visual UI of the modal not correct in editor mode?