For example, I manually removed one of my projects from the angular.json file, but accidentally took out the “projects”: { line as well. When I ran the build the next time, it would get to 73% and stall out. There was no indication of why or what was happening in the editor. I would just notice after a period of time, the project under the servers tab (bottom-left of IDE) would end up saying stopped… even though it still said it was building in the progress tab. To actually stop it, I would have to stop it under the progress tab.
If unable to replicate and you feel its worth addressing, I can Camtasia it… I am pretty sure I can replicate it even though I have moved on as well. 🙂