Sorry, just to clarify something: Are you running the version 4.0.1 downloaded via the launcher? This version did not include the SVN binaries out-of-the-box, so required you to install it separately. If not, what version are you running?
This is not something we are seeing here at all. Are you able to build from source & add a breakpoint to determine what is causing the CLOSE_SLATE_MAINFRAME command to be queued (this is in your log)? This is usually only done as a result of user action & there are 4 locations it can be called from in our current version.