When playing on my hunter today i noticed that Ctrl-1 wouldn't make my pet attack, ignoring thinking I'll sort it later when ever I press any other key it acts as if I am holding Ctrl when I'm not (S turns off sound, M turns off music ect) tapping Ctrl again on its own allows me to use keys as normal as long as I don't try to use and Ctrl+ combos.
Anyone else had this problem or know what might be causing it?
Which OS are you using as it sounds like the sticky key option is active for you, also, does it happen with any other game/application?
If Sticky keys are turned on and you're using Windows, pressing shift 5 times in a row will show its options, from there you can turn them off.
I'm unsure how to access these options on Mac, sorry.
But I hope that helps.