I confirm similar problem..
in my case, I use V 2.0.1, build 2217
I did pretty much same as the author of this subject, reinstalled and tried different setups, with and without plugins/settings.
It has no effect on the issue.
But in my case mouse seems to work perfectly in editor, ut in side-bar left-mouse button does not work at all.
I can activate tabs with left click, but cant close them by clicking on "x".
seems to be a bug.
PS: WinRegisty has no entries of sublime except file extensions