Mumble destroys and recreates AudioInput when the sender switches audio
devices. The destructor sends no terminator, and the replacement resets
iFrameCounter to zero, so a sender who never unkeys silently restarts its
frame numbering mid-burst. The jitter buffer kept expecting the old
sequence and discarded every packet as late until the next unkey.
Resync on a sustained run of late packets combined with a backwards jump
too large to be network reordering. Both conditions are needed: the run
length alone would let a clump of reordered packets drag the expected
sequence backwards, and small jumps need no intervention because the
restarted stream climbs past the stale expectation on its own.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
