Aeotec Smart Switch 7 keep turning back on when turned off (and vice versa)

Good morning,

I have a Hubitat Elevation, a Lutron Pro Bridge with a Pico Remote and a couple of Aeotec Smart Switches (v7) and as of a few versions of Hubitat, these smart switches cannot be reliably turned off anymore via Rules or Homebridge-tonesto Homekit Automtations... when turned off, they keep turning back on and in the logs I see

java.util.ConcurrentModificationException: null (supervisionCheck)

entries for the Smart Switches when that happens.

I never had and have built-in rules or the homekit automation enabled at the same time, I tried with Homebridge-tonesto removed altogether.. but nothing changes it... these switches and attached lights just keep coming back on.

I tried with debug logging etc on and I see the following:

dev:52021-07-11 11:23:07.503 errorjava.util.ConcurrentModificationException: null (supervisionCheck)

dev:52021-07-11 11:23:07.494 debugre-sending supervised session: 10

dev:52021-07-11 11:23:02.460 [debug]
(http://192.168.0.40/device/edit/5)new supervised packet for session: 27

dev:52021-07-11 11:23:02.457 debugon()

When wanting to turn it on, but same when pressing the button that's linked to the 'Off' rule:

dev:52021-07-11 11:23:59.434 errorjava.util.ConcurrentModificationException: null (supervisionCheck)

dev:52021-07-11 11:23:59.424 debugre-sending supervised session: 11

dev:52021-07-11 11:23:54.379 debugnew supervised packet for session: 28

dev:52021-07-11 11:23:54.376 debugoff()

Does anyone have any idea why this might be happening? I can turn on and off the switches via their physical buttons and it used to work for months just perfectly fine... until I didn't (and I had not changed any setting other than keep the Hubitat's firmware update to the latest version.

Thanks!
-Joerg

Added logging for the rule / button presses and one can see that it is only pressed once:

dev:52021-07-11 11:30:36.395 errorjava.util.ConcurrentModificationException: null (supervisionCheck)

dev:52021-07-11 11:30:36.376 debugre-sending supervised session: 12

dev:52021-07-11 11:30:31.376 debugnew supervised packet for session: 29

dev:52021-07-11 11:30:31.372 debugon()

app:232021-07-11 11:30:31.358 infoAction: On: Night Stand Joerg for button 1 pushed