Volume or recording levels of audio devices reproducibly change to undesirable values under certain circumstances

In two specific circumstances, my audio devices' volumes get changed from what I had them set to last time to an undesirable level:

1. Whenever I plug in my external screen which includes a built-in microphone (it's this thing: https://www.bhphotovideo.com/c/product/1718042-REG/hp_4q8n9aa_aba_24_qhd_90hz_hdr400.html), the volume level of my laptop's internal microphone drops to 14%, forgetting the level I had it at before (typically 53%). I prefer the laptop's internal mic, so as a result, no one on video calls can hear me until I remember to raise the recording level to 53% again.

2. Whenever I connect to my Bluetooth speaker amplifier, its volume is changed to 100%, forgetting the level I had it at before (typically 20%). In this case it's actually dangerous because 100% volume could damage the speakers' tweeters. So I have to remember to pause or mute before connecting, then connect, then change the volume level back to 20%, then play or unmute.

Both issues reproduce on my wife's laptop which is the same model as mine, but runs released Plasma 6.2.3 on Fedora KDE 40 (I run all KDE software from git master on Fedora KDE 41).

Operating System: Fedora Linux 41 KDE Plasma Version: 6.2.80 KDE Frameworks Version: 6.9.0 Qt Version: 6.8.0 Kernel Version: 6.11.6-300.fc41.x86_64 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 7840U w/ Radeon™ 780M Graphics Memory: 14.9 GB of RAM Graphics Processor: AMD Radeon 780M Product Name: HP Pavilion Plus Laptop 14-ey0XXX

If these are different issues, let me know and I'll open a new bug report for one or both. I can supply whatever logging is needed to debug it.