Some people may not take your comment seriously, but I don't understand how a software update fixes this unless something like this is going on. When I put my earbuds in the charging case, they power off (which disconnects from bluetooth) which means they shouldn't be running software to the best of my knowledge. Do the Amazon ones not do this?

I would be interested to know. If you have these can you please let me know if the bluetooth disconnects from your phone when you put them in the charging case?

They could still be storing audio on the earbuds or charging station itself then transmitting when connected but that seems somewhat unlikely.