After updating to KDE Plasma version 5.27.7, there are issues with volume control within KDE. After connecting a new audio device (e.g. Bluetooth headphones) and then disconnecting it, the device's settings remain within the volume controls. If I reconnect the same device again, its settings also persist.

If I connect the device 20 times, I end up with 20 instances of the device in the volume overview. Under Settings / Audio Devices, nothing is visible regarding these devices, and everything seems normal.

Furthermore, it's no longer possible to adjust the volume using the mouse wheel. While the signal tone plays, the volume doesn't change.

Up until now, I've been able to temporarily work around the issue by logging out and logging back in.

I've been able to reproduce this problem on two systems with the same behavior.


SOFTWARE/OS VERSIONS

Operating System: Manjaro Linux 
KDE Plasma Version: 5.27.7
KDE Frameworks Version: 5.108.0
Qt Version: 5.15.10
Kernel Version: 6.4.9-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 2600X Six-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 5700 XT
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7A32
System Version: 1.0