fix: log output missing when the app closes - sporadically

[wonderbird]

From time to time the application fails to write all log messages to the console before terminating.

If this happens when the user operates the app, then s/he will not see the full application output and may be confused. In addition, this causes the tests to fail.

Examples:

• Test timeout because tests wait for "malimo has completed"
• Test failure because application terminates before all logs are written