Pressing Escape on lock screen doesn't sleep M1 MacBook Pro with Karabiner

[Uhl]

I usually sleep my M1 MacBook Pro by pressing Cmd + Control + Q to lock it and then pressing the Escape to sleep it. With Karabiner running, pressing Escape flashes the screen black, as if it's going to sleep, but then it turns right back on. 

If I use my mouse to click the Cancel button at the bottom of the lock screen, it does sleep the computer. So this seems to be a problem with the Escape key. This happens with both the built-in keyboard and an external Bluetooth Apple keyboard. 

Interestingly, this is not a problem on an Intel iMac on which I have also installed Karabiner. 

Any ideas?

[Uhl]

Here's the corresponding GitHub issue I just submitted: 

https://github.com/pqrs-org/Karabiner-Elements/issues/3379

As a workaround, I've been using a "hot corner" to sleep the computer, but it's not as convenient (for me). So finally decided to log a ticket.

[Uhl]

Since posting this I've switched to the free Hyperkey utility to avoid the issue. It may not have all the features of Karabiner Elements, but it lets me map a hyperkey.