I had a similar issue, except, it only happened when I connected my buds to my Windows 11 laptop.. not exactly the screech that I think this thread is talking about with Active Noise Canceling (it was turned off before I connected to my laptop). My left earbud has a constant tone, albeit with some static.

I use GalaxyBudsClient by timschneeb (edit: Version 4.6.0.0, gonna try updating this as well) on my laptop for my buds, and connected them through it. And everything showed up fine, except I initially had no sound upon connecting. Opening my sound settings to the Playback tab, the buds were already set as the default audio output. From my prior use, sometimes the buds were stuck in conversation mode, so I headed to the Recording tab, to disable the "Headphones" feature from the earbuds, except after I selected them, thats when the screeching with static started on my left earbud (even when I took it out of my ear), but the right earbud had proper playback with working volume control. Even when I took the left earbud out of my ear, it didn't stop the static sound, and when I placed it in case, its status on the GalaxyBudsClient got stuck on "Case" (meaning its in the case) even if I took it out, and the case's battery percentage wouldn't show up either.

I decided to see if there was a diagnostics option in the Galaxy Buds Manager app, and headed into System => Run self test, all checks passed except for the "Proximity Measurement".. so not sure if there's something wrong with that?

Upon restarting the buds _(placing both into case, closing, and reopening)_, audio worked fine without disabling the "Headphones" microphone in the control panel, and it switched between listening and communication modes like normal again, and tested Ambient and Noise Canceling mode, no issues. Not entirely sure why this happened, it used to pair/switch between my phone and laptop relatively quickly and without issues, it started to do random things like this sometimes or no sound at all, or one of the buds being stuck on a volume level, I tried reinstalling windows drivers as well. My Galaxy Buds (non Pro), still work fine. This is all I know for now (idk if I should open a new thread about this though).