How come I can't check in Facebook with Galaxy S2

Recently I face a problem, I can't check in Facebook with my galaxy S2.

I uninstall facebook apps and reinstall, couldn't work.

I off my phone and remove my battery over 10 seconds, couldn't work.

Finally I check my setting, and found the Developer Options, and untick the "Don't keep activities"

This function is for destroy every activity as soon as the user leaves it.

I think that is why my facebook will not allow me to leave any activity (Check in record) there.

Finally, after I untick this function, I can check in Facebook already!

Just share with you all who also facing this problem too.