No problems...... so far
I dont seem to have the problems that the video demonstrated.
As to the functionality...... well it is a bit chalenged so as a primary radio in an aircraft with no electrics I think I would look for another product.
However my reason for buying the radio was for use as a last ditch back up to counter the total electrical failure in IMC situation. At one time when the UK had more than a token air force a hand held radio with an external antenna was enough to get you on the ground using a military PAR.
This option for safe recovery now being almost unavalable within the 30 min standby attitude battery life I decided that the Yeasu was the bit of kit for my situation as with the ILS you have far more airfield options.