I have installed subclipse v. 1.10.13 through eclipse market place many times, because after reboot my laptop the plug-in is not longer available, if I check in Help --> Installation details, the plug in is not there. it may be related, but also when I start my lap and open eclipse sts, it asks me to select the workspace, but only shows me the default one, instead the last one I choose.
My lap is a Mac book pro with macOs Sierra.
I was also facing the same issue. To resolve it I did the following steps.
It should resolve the issue.