Did you ever find a solution to this problem i am having the same issue.
I have the same problem. I analyzed it a bit and came to the following conclusion. I have a device A which also triggers devices B, C and D. I created a scene that when device A is turned on, the devices B, C and D will also turn on. Now I manually turn one of the devices B, C or D off. I wait some period of time (varying from several minutes up to one hour) and the devices B, C and D will automatically turn on. When I look into the history log, I can see that the scene keeps repeating (varying from once in several minutes up to one hour). This is not what I expect of a TRIGGER. Please release and update to fix this, because I can imagine that a whole lot of users experience the same kind of problems.
Auto scene were setup and working fine, stopped working after several updates, eta on fix here