systemd killing processes on monitor wakeup?

I have a couple processes that have been consistently dying every time I wake up my monitors after the system has been idle. One is Slack Desktop and the other is IntelliJ IDEA. Plasma also crashes on every wakeup, which may or may not be related. I used an eBPF program (killsnoop.py at https://github.com/iovisor/bcc/blob/master/tools/killsnoop.py) to trace where the signal to shut down these processes was coming from, and it appears that systemd is sending pretty much every active process signal 15 and then 18. TIME PID COMM SIG TPID RESULT ... on monitor wakeup ... 12:16:58 2551 systemd 15 2938613 0 12:16:58 2551 systemd 18 2938613 0 12:16:58 2551 systemd 15 2938814 0 12:16:58 2551 systemd 18 2938814 0 12:16:58 2551 systemd 15 2938832 0 12:16:58 2551 systemd 18 2938832 0 12:16:58 2551 systemd 15 2938978 0 12:16:58 2551 systemd 18 2938978 0 12:16:58 2551 systemd 15 2939432 0 12:16:58 2551 systemd 18 2939432 0 12:16:58 2551 systemd 15 2939899 0 12:16:58 2551 systemd 18 2939899 0 12:16:58 2551 systemd 15 2942192 0 12:16:58 2551 systemd 18 2942192 0 ... Process 2551 is the user process for systemd: raman 2551 1 0 Jan07 ? 00:00:10 /usr/lib/systemd/systemd --user This behavior is relatively new. What is going on here? I haven't found any other reports of this behavior anywhere else. Regards, Raman