Shift Double Click Token Doesn't Open Character Sheet

I've never had this problem before until today. Every time I try to shift click on a token that represents a character it no longer goes to the character sheet it just opens the "Edit Token" screen. Anyone else having this issue? My shift keys still work as intended. I go to another page and shift double click on tokens there and it opens the character sheet, but if I close the sheet and try again on the same token it just opens the "Edit Token" screen.

Can you verify that the token does indeed represent a character? I.e., when you open the token edit window, it does show as being assigned?

They do all represent characters. It's actually really strange. Like I just tried it now and it opened the correct character sheet along with the edit token page. I then closed both of those pages and tried again and it just open the edit token page. Just seems very inconsistent/random. 

Just fixed it, apparently sticky keys being turned on prevents opening the character sheet the majority of the time. Issue resolved.