Citrix (a remote desktop app) breaks that; apparently no mouse scrolls are sent to an app on the remote desktop until you click in the Citrix window.. Thunderb

Citrix (a remote desktop app) breaks that; apparently no mouse scrolls are sent to an app on the remote desktop until you click in the Citrix window.. Thunderbird partially breaks it: I just tried with TBird in the background: scrolling the list of emails (that works) and the text of a selected email (does not work).