Lost dispVM option

Hi, in my email qube, based on fedora-38-xfce template i suddenly lost the option to open in dispVM in thunar. I used to be able to open into dispVM through thunderbird, some late update must have changed something?

edit: dispVM functionality works in other VMs based on same fedora-38-xfce template

Do you see it when you go to the custom actions menu (Edit → Configure custom actions…) in Thunar?