I've seen similar issues mentioned for PC, but none have noticed so far that this bug is specifically related to the wide shovel's "screen shaking" animation. One of two things happens upon use, right after the "screen shake":
1) You're asked to confirm if you really want to leave excavation
2) The game crashes (and you then have to log back in and spend another 10m scouring the dig site for another location....)
PLEASE FIX.