As the title suggests, I'm looking for some information on when the practice (concerning soloists and directors) of exiting and reentering the stage during an applause after a classical performance started. I have tried searching on the web, but to no avail. There seem to be many articles and general documentation on why we don't clap in between movements (a rule I personally find abhorrent) but none on this end-of-concert practice.
I can see that ego of the performer and/or director is showered with renewed applause is this way, but was there a period in which this coming in and out started being mainstream?