We hade a rehearsel today with 17+ musicians.
server was running brand new 5.3.11.
the connected clients hade varying versions.

a client with version 5.3.11 has strange problems: the slides (and levels) suddenly change without him touching it. 4 sliders went to max and 1 went to 0.

another client with version 5.3.10 reports the (exact) same thing.

another user (running 5.3.10) reports that she was muted without touching anything.

(all had "small packets")