SUMMARY

After updating to Plasma 6.4 Beta I noticed that every time I exit a video in fullscreen mode, I get a notification saying:

Unread notification
1 notification was received while Do Not Disturb was active. 

I believe this is a false positive (there is no actual missed notification), and the message is also not clear giving no clear action for the user. For example, if there is such unread notification, how can I see it now? There is no button, and opening the notifications applet says "No unread notifications".


STEPS TO REPRODUCE
1. Open any video in the browser and put fullscreen mode. For example, open one of the videos in the highlights of the Plasma 6.3 announcement (https://kde.org/announcements/plasma/6/6.3.0/)
2. Exit fullscreen mode

OBSERVED RESULT
The "Unread notification" is shown

EXPECTED RESULT
Only show "Unread notification" if an actual notification was missed, and give a clear action to the user.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.3.90
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0
Kernel Version: 6.14.6-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 22 × Intel® Core™ Ultra 7 155H
Memory: 32 GiB of RAM (30.9 GiB usable)
Graphics Processor: Intel® Arc
Manufacturer: LENOVO
Product Name: 21KDS00600
System Version: ThinkPad X1 Carbon Gen 12