Alert box position ignored in Wayland

[imThief]

Hello.
An issue is plain: alert box position settings seems to be ignored in Wayland type of Xserver session. Whatever I choose as position (even custom) it always shows up at the center of the screen. Another moment that might be interesting: if i choose "custom" the max bottom-right coordinates that it determines is X 388 Y 143.

Steps to reproduce:
0. Start Wayland session

1. Start thunderbird
2. Generate any mailbox alert (also reproduces at a test alert type as well)
3. The alert shows at the center of the screen, with standard window frame and controls

Workaround:
I'm using libnotify for now: /usr/bin/notify-send -i /usr/share/pixmaps/thunderbird-bin.png -t 5000 -e -a "%sendername" "%subject" "%folder"

System info:
Mailbox Alert version: 0.30
thunderbird-bin --version: Thunderbird 102.12.0
KDE Plasma version: 5.27.5
uname -s -r: Linux 6.1.31-gentoo-x86_64

If any other info i can provide or any testing that should be made - feel free to ask.