Running natively, I'm noticing often that Ubuntu keyboard shortcuts for things like workspace switching and terminal are unreliable - that is, sometimes they have no effect and it will stay that way for several tries until I click around or something and try again. And this is with or without any applications running, or maybe just Nautilus and/or Chrome.
What might be causing this? What package does this kind of behavior relate to? Besides basic machine specs, what type of details would help the package maintainers actually address this problem?