Don't hide messenger (or generally any side window) when opera is refocused

Tomato4

Tomato4

Currently whenever you open for example messenger in the side window (not pinned), then alt-tab or just click into a different app and then alt-tab back or click into the side window, the side window will close.

Generally, this would be probably a minor inconvenience to just reopen the side window, but I'm using an emoji picker. And whenever I open the emoji picker and select the emoji and Opera gets refocused, the messenger will close and I have to reopen it.

And for reference, I checked with the Windows version and apparently, this is not the case in Windows. There if you focus different window and then get back (by alt-tabbing or clicking into the side window), the side window stays open.

Steps to reproduce (on Linux):

open a side window (eg. Messenger, ChatGPT, WhatsApp, ...)
alt-tab to a different window (or click here)
alt-tab back to Opera (or click into the side window in Opera)
side window gets closed

Information about PC (I don't think it's relevant to the problem, but just in case):

OS: Manjaro x86_64
Kernel: 6.5.5
DE: KDE Plasma 5.27.8
WM: KWin (Wayland, but the problem is also in X11)
Opera version: 102.0.4880.70 stable installed from official repo (Extra) from Manjaro

Would it be possible to fix this minor bug?