hi klaus,
i dont know if that is pr14 related but when i go to webvr with safari 10.1.2 on macos 10.10 yosemite,
then the exit/setup buttons are displayed, but i can't look around, the view is locked.
on sierra with the newest safari it works normally, also on yosemite and the newest firefox,
so it doesnt look to be an issue of the tour itself.
is there a known issue with safari on yosemite?
best, index
ps. there is no error in the console