How I learned about the PathMap MSBuild property
https://www.damirscorner.com/blog/posts/20260515-AReasonVsDebuggerMightNotHitBreakpoints.html

A reason VS debugger might not hit breakpoints
There's an open source application plugin written in .NET I occasionally contribute to. As a regular part of my workflow, I sometimes have to attach the debugger to the application with the plugin loaded to troubleshoot unexpected behavior. When I did that the last time, the breakpoints in Visual Studio for some reason didn't work.


