Node 5 and Node 10 are both AEOTEC Smart Energy Switch
DCS06106-ZWUS
Alright, thanks for confirming. Just wanted to make sure it wasn’t an unsupported model that might cause an interaction. A stretch regardless.
The HEM is more likely to be involved if device interference is an issue, given the fact that Qolsys directly addressed HEM capabilities in recent firmware, although I would expect it would affect way more than just the bulbs.
I wouldn’t doubt that this might be a bug related to Z-wave S2 changes, although I cannot replicate this with a Z-wave bulb on my own 2.5.3 system.
Do you have Z-wave 6.81? What is the Z-wave version under the About section on the panel?
Qolsys has not followed up yet on the ticket I submitted for this. I will reply here with their recommendation when we hear back. Should be soon.