I have tried your installation with both Joomla 4 and Joomla 3 and the result is always the same. I don't do anything, I don't install anything but your standard installation, I go to the module and even if I just save the title change, it doesn't make the tabs appear anymore. The same happens if I make a new module. I also tried to change the php version, using 7 instead of 8, but the result doesn't change. I also think there is a JS conflict but how can I get rid of it?
Then there are things I can't figure out, like the presence of canceled properties and links to pages that don't work. With the other sites on the server I have no problems.
