Notifications occasionally spawn in the wrong location on screen

[Schykle]

• I have searched open and closed issues for duplicates.

Describe the bug

From time to time, notifications can spawn on the left side of the screen rather than by the notifications center on the right as expected. I have noticed it typically happens more when there haven't been any notifications in a while. I've even sent test batches of hundreds of random notifications at once with the help of notify-send and some scripts (massive props to the notifications center being so resilient and handling this perfectly BTW), and none spawned on the left.

To Reproduce

Steps to reproduce the behavior:

1. Wait for a notification after a long period of time to spawn in an unexpected location

Expected behavior

Notification placement is always consistent

Screenshots or screen recordings

Platform Information

• I'm using the latest version from git that I've manually compiled
• I'm using the latest released stable version

[danirabbit]

Transferring to Gala, since the window manager is responsible for placing notification windows

[cassidyjames]

Duplicate of #1229