Tvheadend: Mux streaming not working

Hi!
It seems there is an issue since 4.0.7 that mux streaming over http is not working. You can try on any player, but (default) password is rejected for unknown reason.

Thanks.

remember that the play needs the tvheadend username and password too.

default is osmc/osmc

something is definitely wrong because just few minutes later it will work with that default combination…

using ticket y for /stream/mux/x
HTTP/1.1 GET /stream/mux -- 401