New shortcuts for Bold/Italic/Underline not work

I am also experiencing this. I swear I tried it when I first found out about the new shortcut and it worked, but today I cannot get it to work. I am running AI 28.3 and it gives me a little error ding sound when I try to use the shortcut shift+ctrl+i to italicize or de-italicize. I tested shift+ctrl+b for kicks and it also does not work and makes the digning noise. My text is Gotham Narrow Medium and I have the medium italic, bold, and bold italic installed as well.

I tried to use the new shortcuts in the latest version of Illustrator on Windows 10 and so far I can confirm that it doesn't seem to work at all.

So the font styles are installed?

And how did you select the tet? You need to select the text with the text tool for this to work.