When testing the latest dev release (9.1.3PRO-dev2335180) to fix the conversion issue between menu assignments to conditions, we found a seemingly unrelated bug on Joomla 4.

Suppose you have a module set with a condition to a single parent menu item. The condition does not include any other menu item. When navigating to a child menu item, the module does not show up. However, after adding another menu item into the condition (a random menu item), the module then shows up on the aforementioned child menu item.

That being said, if the condition is a single rule directly to the child menu item, this issue does not show up and the module seems to properly show.

Sorry about the delay. Monday was a holiday for us in the US. I took a look and apparently, the server ran out of space. I've removed some things to free up some space and can confirm that the ftp account should function normally now.

It seems like you had already installed the latest dev version on the site. (We haven't touched the site at all since this thread was created. The things we removed to free up space were unrelated to this site.)

Anyway, it looks like the issue no longer appears. As far as I can tell, I think you've fixed it!