Presentation Mode Gone

Hello,

I booted up my MacBook Pro this morning and launched Google Chrome. The first thing I always do is enter Presentation Mode, because the seamless display of a website is so much more enjoyable.

When I pressed the command, it didn't work. And when I went into the "View" menu, it was no longer there. Obviously it's not the same as Full Screen mode, but that is the only option left.

I checked Safari, and it was gone from there as well. Why would this feature have suddenly disappeared without any updates?

Chrome 49.0

OS X El Capitan 10.11.2

Thanks for your time!