How to switch to a editor tab in Presentation mode?

I have seen other posts here of folks who have problems with tabs and tools being closed upon returning from Presentation mode. I don't have that problem. Everything is in the same place after exiting Presentation mode.

However, what I *would* like to do is to switch to a different editor tab while in Presentation mode. The key to move to the next or previous tab (Alt-left, Alt-right) do nothing. I have to exit from Presentation mode, go to the next tab I need to present, and then re-enter Presentation mode.

Is this a bug? Is this expected behavior?

I am using PhpStorm, build #PS-171.4694.2 with Linux Mint 18.1.

Thanks!