Actually, I'm now experiencing a variation on this behavior. What happens for me is that after an extended period of inactivity (two hours, maybe?) Ansible becomes entirely unresponsive to front panel input. None of the 3 buttons react to user input and unplugging and replugging the Grid doesn't help, neither does swapping an Arc.
I was reluctant to power cycle as I had been building something earlier, but then I realized that photos can be a last resort when needing to rescue some unsaved work.
Power cycling fixes the Time and Config View buttons, but not the Preset function. Long-press works fine to switch Applications, but the short press does nothing... until I unplug the clock input (source: Pamela's New Workout powered by Intellijel TPS80w). I'm running the firmware version that shipped with Ansible a couple weeks ago.
@dudadius, did you ever resolve this?
[EDIT: Two hours later, during use, the Grid stops being responsive, but still shows current movement on active page. Disconnecting/Reconnecting the Grid fixes it.]