*All* hang my on system after doing the following:
1. open Pd app
2. turn on DSP
3. open audio test patch
4. turn off DSP
GUI goes unresponsive and pd core process pegs CPU. I then have to use "killall pd" on the command line.
Pd-extended does not hang and is able to restart audio after toggling DSP.
This is a strange issue as I don't remember when it started happening. I feel like Pd was running fine when I first updated to macOS 10.14, so I wonder if it's some sort of issuer with my system only. This is also not a problem on my macOS 10.13 machine at work.
You can also open the Activity Monitor app and search for "pd." If the process has hung, it may also display "Not Responding" next to it.
Well, like I said, I've been using Pd 0.49-1 without anything funny happening, no hanging whatsoever. At least without noticing it, and it all looks fine by checking activity monitor.