Anvil window kicks you out after 10 digits

While renaming an item, somewhere between the 5th and 10th position, the anvil window closes. Happens only on Windows 10 Edition and the 0.16 beta version. The video i'll provide is on a server, but i could also prove same in client side LAN multiplayer. (Android host, windows 10 is renaming).
(Renamed Sandstone to Bananastone)