Why don't Razor live templates work?

I've tried to create the following live template for quickly adding bootstrap tabs to my html and razor pages.  When I type the ttabs shortcut it just creates <ttabs></ttabs> instead of generating the code I have saved.  I've tried a number of the other shortcuts shown in the screen and most of them don't work either.  I've tried making mine available globally anywhere, but still it doesn't work.