Audio auto disabling (bug?)

IvnOs's icon

Hi.
Already even not hoping to recive any answer, but may be...

Well, at this moment making an additive synth that is based on white noise and BP filtering.

The problem is that sometimes even 1 harmonic playing making sound to disappear, and it appears again only after touching any MSP connection with changing Q value of [biquad~].
Is it a bug? Or may be it is some kind of a problem with filter?