This feature is really annoying!
I'm using this Head Unit constantly for the last 6-7 Years (2008 - 2015) in various Cars. Still a good Radio in terms of Speed, Build Quality and Sound. Sadly it does not support FLAC.
I'm about to replace it with the Pioneer DEH-80PRS (Basicly the successor of the Pioneer DEH-P7000UB). This one does
FLAC, Bluetooth and other nice stuff. Buildquality does no look as nice as the DEH-P7000UB.