Breakpoint in a thread causes Windows to kill my app?

I’m getting very close on a conversion of a project to Windows and digging into the lowest levels has me debugging my threads. However, on hitting a breakpoint set within a thread, the debugger pauses my app, displays the breakpoint, and shortly afterward I’m greeted with the Windows “This app has stopped responding” dialog and my app is killed.

If I don’t set the breakpoint, the app runs, but something in the thread is not providing the result I expect which is why I’m trying to debug it.

Has anyone else seen/reported this?

Windows 10 Creator Update and Windows 7
Xojo 17r1.1

If you can get a mini dump of the crash, I would love to take a peek at this.

I’ll see what I can get from it.