Weird behaviour adding events from the front-end

Hi everybody, I'm facing a strange issue when adding a new event from the front-end (from back-end no problems); the JEM form seems to be messed up, with the items that should be in sidebar-right shown in sidebar-left, and the edit tabs missing (pls have a look at the attachments).The strange thing is that I got a copy of my site on a staging system, and on that site everything works just fine. Both the environments are pretty at the same level (details below), any suggestions on where should I look to find any difference?======== Environments =========================================Joomla: Live system 4.4.1 - Test system 4.4.1Template: Live system Cassiopeia - Test system CassiopeiaPHP: Live system 8.2.13 - Test system 8.2.13JEM: Live system 4.2.0 (Sep, 4 - 2023) - Test system 4.2.0 (Sep, 4 - 2023)System: Live system Linux 4ff426bf1941

Ciao, mi ricordo di te.
Can you give the link to this site.
PM is a problem at the moment
Jojo

Ciao Jojo, you ok?
I'll provide you with the credentials in private, thanks.
Marco

grazie, ma non posso entrare com i dati che mi hai dato