click when unmuting (mute~) patcher for first time

titus bellwald's icon

Hi people,
i'm still hassled by clicks i can't locate the origin of. The one i
hope someone can help me with occurs when i unmute (0 1 to mute~) a
subpatcher (with a poly~ inside) for the first time. I have pass~es
both inside the abstraction loaded by the poly~ as well as just before
the output of the patcher. After this firts time i can mute and unmute
as wildly as i like without getting any click.
What can cause this?

Titus Bellwald