There are some apps/watchfaces that don't play well together too, the Gmail app and Bubble Cloud also had a similar problem in battery going dead in a matter of hours... We should make a list of them?, I have a small list in the faults I have found so far, but every time you do find one?,
the best thing to do is a hard reset on phone/watch to reinstall everything minus the defective apps... I'm lazy otherwise I would make an excel spreadsheet with all the app variables associated to keeping on top of this common problem, I had a guy at T-Mobile store ask me about a problem in where I experienced the same thing and told him in how to fix it... maybe one of the moderators can do it? Kinda like what XDA Developers have on their site.