Your system information

• Steam client version (build number or date): 1687386907 Wed, Jun 21 17:18 UTC -08:00
• Distribution (e.g. Ubuntu): Ubuntu 22.04.2
• Opted into Steam client beta?: [Yes/No] No
• Have you checked for system updates?: [Yes/No] No
• Steam Logs: steam-logs.tar.gz
• GPU: AMD 2017

Please describe your issue in as much detail as possible:

I expect to use my computer with steam running in the background, but not popping up windows, nor popping them up during gameplay. Instead, a small window with no title or rendering, but a border and close buttons appears, sometimes every 15 seconds, sometimes every 2 hours. It closes itself within a couple of seconds, but it brings windows out of focus while gaming, too.

diff of xwininfo when it appears:

-     73 children:
+     76 children:
      0x80000a "gnome-shell": ("gnome-shell" "Gnome-shell")  1x1+-200+-200  +-200+-200
         1 child:
         0x80000b (has no name): ()  1x1+-1+-1  +-201+-201
+     0x80044c (has no name): ()  303x125+130+69  +130+69
+        1 child:
+        0x120013b (has no name): ()  283x70+10+45  +140+114
+     0x10000d0 (has no name): ()  283x70+0+0  +0+0
+     0x140014f "notificationtoasts_20_desktop": ("steamwebhelper" "steam")  283x70+2277+1504  +2277+1504

Steps for reproducing this issue:

1. wait for ghost window to appear with no programs but steam running
2. xwininfo -tree -root
3. (optional) xwininfo -tree -root >> file1.txt
4. (optional) wait momentarily for window to disappear
5. (optional) xwininfo -tree -root >> file2.txt && git diff file1.txt file2.txt
6. see three x11 windows added, one labeled with steam