Partial Flash sometimes equals Endless Flash

[PropGit]

When using the new partial-flash feature, I've experienced this symptom twice on a Win 10 system.

• Click Flash
• Dialog gets stuck like this
  
• Editor area (of app) is ghosted
• micro:bit's yellow serial activity LED blinks constantly (random rate, not fixed cadence)
• No recovery except to disconnect USB cable

Retested on Chromebook: no problems.

Retested on Win 10: can't reproduce.

Console didn't seem to have any helpful messages. Is there a way for me to provide more debugging information should this happen again?

[microbit-carlos]

Thanks for the report @PropGit, we'll add more logging to the console to help report errors like this.
We've also reworked a bit some of the error conditions in partial flashing, so it'd be interesting to know if this still happens in the beta.4 released last Friday.