Mine is doing this too, and has done this every time I try to use the Bluetooth part of this product.

I left my base at home and now have a dead move...I guess this is just a portable Sonos speaker for home (not on the move)

Good thing I brought a back-up reliable Bluetooth speaker

what an annoyance.

Did anyone get this resolved?

I experienced a similar issue today.

It happened when I took the speaker to a friend’s and was monkeying around trying to get it to connect with the wifi - I gave up on wifi because I forgot how to add another network - but even when I switched to Bluetooth the light kept blinking (I think amber?...). The Move had almost full battery and kept playing fine for the most part, although once when I turned it up to around 80% it jumped back down to about 15% on its own.

Experienced the same today, have submitted diagnostic and support ticket. 

Hi everyone. Thank you for your patience about this. This issue would best be resolved on the phone with our phone team, as we can perform more advanced troubleshooting with all of you individually. When you have a moment during the week, please give our support number a call. You can find our contact information here.

I have the same problem.   My Move is flashing red.  It shows its battery is at 82%. 
The music is still playing. 
 

here’s the diag number:  1452441690

I am seeing no errors in this diagnostic, other then the battery reaching depletion. Is the LED light flashing Red, or or Amber?

How long is the Move off of the charging dock for?

Flashing Amber indicates that the Move is low on battery, and needs to charge. The Move will continue to play audio. However, if the battery depletes enough, it will turn off until it has been recharged. 

My audio is still going and the light is flashing as I type this. Here is my confirmation number - 985562459

For me the audio stopped but I was able to restart it. FYI I have a case open 01839724. 

Just notice mine doing it. Seems to be working but had stopped playing without being told to and a few days ago had a Max volume moment. 
 

I’ve emailed support as requested. 

Exact use case as mine. Had my Move back in the deck last night after resetting it and charging it and no red light.
 

It played fine with/without blinking red. I did though have trouble reconnecting to the app on red night, and I believe ( but can’t recall) that it went into fault after reconnecting. 
 

BTW, mine played just fine as well