Notifications which popup from a bottom panel are - for a nice optical experience - trimmed at the bottom. I.e. no round edges, no shadow.
This trimmed side of the notification must be adopted for top or side panels, but currently its not. See also attached screenshot.
Steps to Reproduce:
1. Create side panel with notification icon.
2. Trigger notification.
Notification pops-up from the side, but with trimmed bottom, instead of trimmed side.
Notification should appear trimmed on the side which is adjacent to the panel.
Created attachment 78484 [details]
Screenshot of Notification from Side-Panel
*** This bug has been marked as a duplicate of bug 278309 ***