I just installed Windows 8.1 last night and noticed that Strokeit was not allowing you to close the IE window from the Global Actions gesture. The command of Alt+F4 works perfectly fine on your keyboard, but it just wont work. It works on everything else.
Also, if you Strokeit is the last software installed on your comptuer, it leaves a Strokeit box in the taskbar. The only way around this is to start installing stuff that are also on the taskbar afterwards.