Updated to 2.3.5.135 on May 4,
Offline/Online
Since that time, I have had numerous offline-online incidents showing in my log.
Sengled Light Bulbs
I am also going to have issues with some Sengled Light Bulbs the first time the rule runs (sometimes it takes several instances before the rule will run). In a couple of cases, I have run the log and the log indicates that the condition is true to run, but the "on" command doesn't appear in the log. The next time I ran the log, the "on" command showed.
Alexa Echo Skill
Noticed a few times when a virtual switch that I share with Alexa through Alexa Echo Skill is not being passed from Hubitat to Alexa. (this is a new issue -- hadn't noticed this before in order updates).