In the webmail interface, the right-click contextual menu seems to be broken in the latest roundcube package upgrade from 1:1.4.13-0~kolab3 to 1:1.5.3-1~kolab3. Before I think this functionality was implemented by the package roundcubemail-plugin-contextmenu [3.0-0~kolab13) which is no longer installed after the upgrade. If one downgrades the roundcube package, then this plugin is installed again and the Kolab contextual menu works again.
Before it was possible to right-click on an email item and a contextual menu was shown (see screenshot).
This is no longer possible as a normal (non-Kolab) web browser menu is shown (see 2nd screenshot).
As it was a very useful feature, could be please bring it back? Thank you