Since updated to latest firmware, speakers lose sync

[eniriop]

I get sync issues when I put them to standby and wake them up instead of just keeping them powered 24/7. I can split them from stereo and reconnect them though and that solves the issue. It's really strange to me that there seems to be no proper and easily, best automatically activated standby mode. You literally have to reach behind both individual speakers and hold a terrible button for two seconds, then let go at the right time. - and that it seems to bother no one ..?
Or am I missing something and they do kind of hibernate and save energy when not in use for a while??

 I agree with you: this button is terrible. It is very hard to push all the way to shut down the reactors and turn them on again and there is no audible click so you never know if you are all the way down. In fact I had to press hard and long several times without success before one of both reactor finally shut down. 
However I have not noticed the out of sync problem upon restarting them. 
When the led light is off I think they are completely shut down, not just in standby, because the Devialet app cannot find them. 
Better to shut them down by removing the power cord or shutting down the power strip button, because I am afraid those flimsy buttons are going to break one day if I press them so hard each time to turn the speakers on and off.