There is an upgrade available for the RC50 which introduce a new parameter giving you the chance to remove the hiccup.
"This is the latest operating system for the RC-50. This update adds the ability to change the Playback-start Operation. Please refer to the "RC50 Update ReadMe.pdf" for the update procedure. Please refer to the "RC-50AdditionsOM.pdf" for this version's additions to the Owner's Manual."
I don't have the RC so no way to test but some French forum members have reported good results. Unfortunately no correction for the midiSync.
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