This is more of a FYI for you guys with the random shut-off issue. I was experiencing it as well, but my dumb switch is rarely used so I wasn’t too concerned, however in doing a change to my setup, the problem has seemed to go away.
Original setup: 3-way with dumb switch, Line/Load same box wired per diagrams, (6) EcoSmart LED bulbs (I can grab model numbers later), switch configured at the hub (Home Assistant) for neutral and dumb switch (set it off of defaults and then back to final settings to be sure). Remaining settings default.
Original Behavior: Worked as expected with dumb switch in one position, but in opposite position, lights would shutoff within a few seconds.
Correctly working setup: (6) Commercial Electric LED Downlight, switch configured at BOTH the hub and the switch. I haven’t had the chance to do a lot of testing of duration, but it seems to be working normally.
The Weird Part: The new lights will toggle between downlight mode, and night light trim lit mode by powering the lights off, and then back on again within a short period of time (I think it’s supposed to be 10 seconds or something). Attractive pairing those lights with this switch since I could write scenes to single taps to have it toggle between modes with a single press.
I installed these without changing any of the switch settings from the original setup, and it was like playing craps with the consistency of the lights toggling modes without scenes yet written in. First toggle, 4 of the 6 would change modes, next toggle only 2 would, never any consistency. At random distributions, the bulbs would occasionally not see themselves as actually having been turned off it seems, even though I could hear the relay switching. Even the 10 second “limit” you needed to toggle in didn’t seem to matter. I did notice trying to switch off and on too fast lead to the greatest amount of issues, with sometimes the bulbs not changing at all. If I physically unplugged the bulb and plugged it back in, it would change as expected.
During this time, while I was toggling at the dumb switch a few times, I didn’t see a random full shut-off, but it also wasn’t my primary concern at the moment so I can’t say I actually thoroughly tested if it was the bulbs that eliminated the issue.
What finally got these bulbs toggling between modes correctly and within the time frame required was setting the configuration of AC and switch type at the switch (which wasn’t matching the HUB based on purple LED flashes), and changing the ramp rate to “0”.
Let me know if there is any other testing you’d like me to try on my end over the weekend and I can give it a shot. With the mis-matching configurations, it seemed as though there was a load leak or something going on.