This isn’t really a webcore problem, but suspect many here use alexa routines.
Has anyone noticed their virtual/simulated switches disappearing from alexa routines? I’m not sure when this happened, but suspect it is part of the changes smartthings are making. I’m not sure if physical devices may have gone too, I tend to use the alexa routines as little as possible and keep everything in webcore.
They’re easy enough to add back, and then seem to work ok. Thought I’d raise it though, it might be worth checking your alexa routines.