Few small issues Desktop Edition
1) That's known problem which should be fixed in version 6.4, on some config there are problem with the Windows "ribbon".
2) Same here, actually. Currently if you close the app it does not appear. The new version will be released in January.
3) That looks like something new. Please update to version 6.2.3, enable high logging (tools > options > logging), reproduce the problem by running the plan for 3-5 minutes in this state, and send us the logs via tools > diagnostic menu. Don't forget to mention this forum thread in the issue description so it goes directly to me.