Type of bulbs: 3x LED, then switched to 2x incandescent + 1x CFL – same problem.
Load: With LEDs, 14W. With incandescent + CFL, 95W.
Make/model: LEDs were 1x Hudson Lighting Dimmable LED Edison 6W + 2x Hizashi Dimmable LED Candelabra 4W. Other setup – don’t know.
Switch setup: 4-way with dumb.
AC power type: Neutral
After 2 days of debugging, my symptoms aren’t quite identical to anyone else’s that I could find in either this or the other thread, but they’re similar enough that it almost certainly has to be from the same issue:
In one parity of the 2 dumb switches, indicator LEDs on the switch itself, as well as status on Hubitat, agree with whatever state I try to set it to (on/off and level) via either Hubitat or the switch, but the lights generally don’t come on at all, even though the relay clicks. In a few instances, if I set the brightness lower (I tried 50 and 80) via Set Level on Hubitat, the lights come on at the correct level, but this only sometimes works, and never works if I simply turn it on from either Hubitat or the switch (even though it’s set to resume the previous brightness level). Beyond that I haven’t quite figured out the pattern.
In the other parity of the dumb switches, the lights happily come on at full brightness (or any lower level I want), but if I switch it off (via either Hubitat or the switch) it just turns itself back on after usually less than 1 second, correctly reporting that new state to Hubitat.
On a probably-unrelated-but-possibly-related note, the switch seems very sensitive to static electricity. Several times when I touched the paddle, before pressing anything, it would flash red, green, and blue and change state (usually turn off I think). This strangely also seems to extend the period it would stay off (in the 2nd dumb switch parity) to 10 or 15 seconds, but this would consistently decay back to under 1 second without any further static power-up.
UPDATE: I was re-reading the printed instructions that came with my switches and noticed a tiny warning that they won’t work with illuminated dumb switches. I didn’t even think about the fact that 1 of the dumb switches in my 4-way setup was illuminated, but in hindsight that obviously would mess with the smart switch since even when off the dumb switch is sending a tiny amount of current through the circuit that the smart switch expects to be dead. In any case, I switched it out with a non-illuminated dumb switch, and that fixed my backwards issue of lights refusing to stay off. Instead, it’s now (roughly) the same issue everyone else here has, which is that the lights will turn itself off after a few seconds (using the LED bulbs; I haven’t tried the other ones). Reducing the max brightness to 90% seems to fix this for me, so far anyway.