Don't have a mouse jiggle. But I know I can trigger this crash by just turning my external display off and on again. So I guess it will happen for some after waking from sleep. I personally use: https://apps.apple.com/nl/app/sleep-control-center/id946798523?l=en&mt=12 to prevent my system from sleeping at moments that I don't want it. But it's highly troubling to me that a system can crash by just turning an external display off and on again.

You have gotten further with support than me. My senior adviser claims he's not able to get through to engineering (engineering says: it's 3rd party hardware fault, not ours). Please note, the fix appears to be incoming, but only with Monterey. At least, the last beta didn't have the issue anymore. But 1 year ago I was in a similar situation (crashes in Catalina, would be fixed in Big Sur), but then Apple at least accepted the fact that it was an issue on their end. This time I've not been able to get that statement from Apple.

https://www.macrumors.com/how-to/install-macos-monterey-public-beta/ But please be aware, this version of macOS is not stable on a lot of other fronts. What I did is create a separate partition with the disk utility and then just test if it's fixed. I'm not working on the beta. Connecting displays via HDMI also seems to resolve the issue. That's more practical than switching to a beta.

I'll test this soon™

This is a great suggestion. Will try this after the 11.5 Beta 5 test

Still crashes :(

You are amazing @scarvalhojr! That fixes the problem for me. At least. So far I'm unable to crash my system after disabling DP 1.2 on the monitor. I had DP 1.2 enabled in the hope one day macOS would support MST Daisy Chaining so that I only need to switch the input on 1 of my displays to switch to a different system. https://discussions.apple.com/thread/7363807 But I've given up on that hope. If they are not even accepting a Kernel Panic to be something wrong with macOS how the ... will they be able to support something as MST Daisy Chaining.

11.5.2 didn't fix the issue for me. Still panic(cpu 5 caller 0xffffff801a49fc36): [kext.kalloc.2048]: element modified after free (off:1672, val:0xfffffffe00000000, sz:2048, ptr:0xffffff938facc000, prot:zero) On Mac OS version: 20G95 Are you sure you are facing the same kernel panic @paabloop? Only things so far that fix it for me are: - Connect displays via HDMI; - Beta of Monterey; - Turning off DP 1.2 on my Dell Monitor