some apps start twice on login
## Submitted by Rion
Assigned to **Xfce Bug Triage**
**[Link to original bug (#9147)](https://bugzilla.xfce.org/show_bug.cgi?id=9147)**
## Description
I guess one time for ~/.config/autostart/app.desktop
and second time for ~/.cache/sessions/xfce4-session-HOST.local:0
that's quite annoying since I have to close one of instances each time I log in.
If I remove contents of ~/.cache/sessions/ before login then only one instance is started.
Expected behavior: session manager checks if app stored in session is also in ~/.config/autostart/ and skips it if so.
Version: 4.10.0
issue