Not sure why I can't post in the comments section so I'm posting here.

I can't highlight/select the toolbar buttons to rotate/stack the object. I can select the first 2 buttons ("pick up" and "place") but only half of the "place" button will highlight before the mouseover buttons disappear. So annoying. Doesn't matter what the toolbar width is (either option) and I didn't have this problem with the default/vanilla toolbar.

I'm using the July 2, 2016 last updated version.