[emptysongglass]

The way to get around this, until (or if) this is ever fixed, is to first switch to a different numbered workspace than your primary then open the fullscreen app there. If you need to look something up without quitting the app you can then just use whatever keyboard shortcut you’ve assigned to your primary to switch.

[aerique]

I do the same for games in StumpWM: I just switch to an unused virtual desktop.

I don't really see the issue once you're used to it.