My workaround for this issue with LR 6.12 (just on a side note: this had been reported also to Adobe Support but despite collecting and submitting data more than 1 month ago - there has been absolute silence to repeated emails): go back to library and then go back to maps, the map should again update for a few moments or manipulations before freezing again; repeat this as often as needed.
I found this same issue also with the new LR classic CC but the update from yesterday seems to have resolved this issue... fingers crossed.
The flashing offline problem is resolved for me but I've got another equally annoying and distruptive problem. I have the latest LR 6.x and High Sierra installed, and as I installed both at about the same time, I don't know if one or t'other is to blame. After a short period of use (sometimes under a minute), the map stops updating. I can see the thumbnail map zooming in and out, but not the main map. I can't click on the photo markers on the map, and I can't drag photos to a new map location. Switching back to the library module and then back to the map module resolves it, very temporarily.
And LR 6.12 didn't either. Whilst Google's servers may have exacerbated the issue, I still get the same fault now. The fix is to reboot LR. Something to with LR getting tired after a heavy or extended session and not having the capacity to handle this - that's a not very computer savvy explanation but it seems to be the 'reason'.
Sune, Google changed something on their servers a few months, which had to be fixed in shipping Lightroom versions. Since Lightroom 5 is quite old now, I'm afraid it won't get fixed in that version.
Had the same problem, but luckily I could geotag the photos in the free software for my camera. It seems Nikon knew the GPS in the otherwise great D5300 was really bad and bundled the Capture NX software with it so you could somehow geotag your RAW files 😉 If your files are jpeg I think there are many ways to geotag them, Google, your phone, ... For Adobe it just seems they want you to all the time by new versions of their SW until you get so tired of it you just by and expensive subcription instead. Not very nice.
"Map is Offline" makes the Map module unusable. I just got back from Europe and I'd like to map my 1000 photos while I still remember them. Please fix this - it is extremely aggravating.