Right now I am configuring my Remote3 (version 2.8.1). Randomly changes done in Web-Configurator are not showing up on the remote. Then I need to restart Remote3 by pressing power-button for long time + confirming pressing long on Restart.
After restarting my changes done in Web-Configurator are appearing on Remote3.
I cannot map the behaviour to any specific activity. It just happens from time to time, when doing a lot of configuration during several minutes. My configuration activities are mostly assigning buttons of an entity.