Log is cleared when application is terminated

[PropGit]

When the BlocklyPropClient application is closed, the log file it created is wiped clean, leaving it 0 bytes in size.

This happens on Windows; have not witnessed it on Mac.

[zfi]

I have seen this in my development environment. Not very often, but it does happen. There is likely an error in how the app is shutting down or in the order in which logging and the embedded server are terminating. When it does happen, I see a single message on the console that indicates an error while trying to write to the log file.

Until this is corrected, select the 'disconnect' button on the client UI and then view or copy the log file. The logging mechanism flushes to disk after each message is posted, so the contents of the log file are complete at that point.

[PropGit]

Verified this happens on Ubuntu also.