[ccyoong]

i bought nokia lumia 900 in this thursday 5 july 2012

sometimes i started a game buy using xbox live it is so difficult to close

when i press the back button (to close the game/apps)
it straight pop out the multitasking screen (which should only appear only when holding the Back button) 

and i choose the app i wish to close agian
but same thing happen
sometime even worst when i only open one game/app
it cannot be close and cannot go back to home screen
because when i press the Home button (when the game/apps running)

the window Tellme pop out ............

 should i take it back for a replacement ?

[mberdych]

It happens to me as well. Need to push back button couple of times to close the app. Annoying issue, but only with games.

[iamrooney]

so very annoying when closing a game apps.. i really hate this bug.. sometimes it wont even close..

[kellygeorge]

This is still an issue, but I have this problem any time audio is coming out of the speaker. If I'm listening to music or playing a game, the softkeys are extremely sensitive and refuse to work properly. (Sidenote on how much I hate softkeys in the first place). It is so annoying Im considering jumping back to my iPhone. Is there any solution to this?

[banlec]

Inability to close apps is a big issue in WP, especially when an app hangs you cannot close it by pressing back button, you need to restart your phone.

[Raziel666]

It's unbelievable that to close Internet Explorer, I need to press the Back button a 100 times all the way back to the home screen!

[Kosh]

You do not need to do that, either press the windows button to return to the start screen and suspend Internet Explorer until you need it again or close the tab you are using ...>tabs an close the tab you are using by pressing the X on the tab.

[NohKeyA]

Here is a link to an additional discussion. 

http://forums.wpcentral.com/nokia-lumia-900/191469-how-you-close-app-permanently.html

While it may not be necessary to close an application, it is a usability issue that should be addressed.  Does Windows 8 work the same way?