Aha! We have the missing clue!
NOW I know what's happening, you're actually running into this little gem of a problem:
https://github.com/djp952/pvr.hdhomerun ... -restarted
Here's what's going on, I'm sure of it. The periodic device scan isn't able to find any tuner(s) when your Wifi drops out for a bit. When the devices are deleted from the database, all the channels go away too. There is a lineup change (removed channels), so I tell Kodi "hey, ask me for channels". It does, none are returned, Kodi deletes them all. The tuner(s) come back, the channels come back, and I tell Kodi "key, ask me for channels". It does, it recreates all of the channels BUT ... Kodi won't ask for Guide data on newly added channels. (Something I hope they correct in Leia).
I think we can solve this pretty easily, let me know what you think about this: I can add an option to disable tuner/lineup discovery outside of the one that occurs during Kodi startup. The downside is that there will be no dynamic add/remove for tuners/channels, but I'm betting that you won't mind that one bit at this point
As for the logging, geez, I said it was verbose! LOL. You can turn that off now, we don't need it. The regular logging is too verbose for your tastes as well? OK, I can do something about that too. It's very handy to have, but I understand -- I'll work on changing it around to be a logging verbosity slider or something - "Errors only, standard stuff, crazy overly verbose stuff". Probably 2 releases away, that will take some time ...
Wish there was more I could do for you on the OSMC thing, I reinstalled 2018.01.09 this morning to try and find out what the deal with the reported bootloop is, but it still works for me. While I have it set up I'll send your recording through again and see if I can come up with something (low chances)
I was working on the next release (1.2.9) to be pretty minor, I'm trimming down my canned libcurl libraries to just be HTTP to reduce dependencies on Linux and compile it from source on Windows (for Leia UWP, assuming that will ever work), but I can finish that up and get you the option you need ASAP. Maybe even tonight, but more likely later in the week.
BY JOVE I THINK WE FOUND IT