This only works for initial load. Seemingly the app checker runs whenever it wants during development which causes much confusion and delays.
We either need to understand what invokes the app checker or ways to defer it. Additionally, it would be lovely to be able to get an ETA for completion. I have been sitting on a checking time period of well over 25 minutes now for an app I was in mid development. I have no idea when/if it will finish and at some point I need to make the decision to just quit and start over again. Probably a half hour-hour worth of lost work.