[LAD] Any tips for (jack) rt audio thread debug breakpoints?

[Tim]

Hi list.
When I put breakpoints in gui or non-rt audio thread code, no problems.

But when I put breakpoints in rt audio thread code, behaviour is odd.
I can continue the program and even have more breakpoints.
But when the program tries to close, it hangs inside jack_deactivate().
I must kill it and QJackCtl and finally jackd. At bit cumbersome.
Seems breaking into the program hiccups jack.

Any tips or settings I can try?

I realize pausing the app is kinda crazy and over-qualifies
  as 'waiting too long in an rt thread' but it seems to
  get so far and work OK but fails at the end.
Can it be helped?

Thanks.