Oh, not sure if it's relevant, my Allzpark was launched from a Rez resolved environment. (Maybe the problem was not related to the OS ?)

Update
Just tested on Windows (with current master branch), same problem.
The application I launched was a simple python qt app, which only had a button to push on main window.

Hmmmm. I'm a bit suspicious about the simplicity of the solution. Would prefer if you used this for a while, make sure there aren't any unforeseen issues with it. I remember having a similar problem/solution with Pyblish. For example, this wouldn't allow applications to emit newlines? And if an application is emitting empty lines and our loop responds with continue, won't we get an infinite loop? :O

For example, this wouldn't allow applications to emit newlines? And if an application is emitting empty lines and our loop responds with continue, won't we get an infinite loop? :O

I remember I've tested this kind of case, and just tested it again for making sure, looks like no problem :D

And in this test, the maya is printing "\n", which ends up printing two lines in console window.

Would prefer if you used this for a while, make sure there aren't any unforeseen issues with it.

But yes, I would prefer that as well. As you can see in the above gif, currently I am still working with mock apps. :)

Re mock apps: Ah yes. You're in for a treat once you find that Maya, Nuke, Houdini and just about any DCC have their own way of treating the terminal and STDOUT. Some use \r some use \n, some use \r\n some use EOF when they quit, some don't. Some don't print anything to a terminal under Windows, but do under Linux. Enjoy xD

And if an application is emitting empty lines and our loop responds with continue, won't we get an infinite loop? :O

It actually did enter the infinite loop, but doesn't drag the resource much so I thought the problem was resolved (what was I thinking). Howerver the Allzpark's "Commands" page did say the process is still running and I possibly didn't notice that as well at the time being.. 🤕