@cego, do you have set a session to load at startup?

I noticed the same.
I use the setting to load the last autosession on startup, but it immediately closes the browser window after the loader/splash window, and then screen titlebar flashes red.

If I delete/rename the session to use, Wayfarer starts ok.
I wanted to do some more tests, if a specific website causes this behavior, before sending a bug report.