I feel your pain. Hot reload was working beautifully in my .net maui app. I loved it. I was testing it as a Windows app. Then I decided to try out the android emulator and that worked fine except that it pointed out that I needed to add a maxwidth attribute to a label. I did that, did a rebuild, switched back to running as a windows app, and now hot reload no longer works. The flame icon is present (and lit) and clicking it does say that code changes were applied successfully, but the app does not show my xaml view changes.
Very frustrating.