Caret of Input Field Disappeared in Android Device

Hi I am using Unity 5.4.1p4.
When typing in Input Field using Android device, Caret does not show up caret (Actually I do not know exact name of the thing, characters upper side of keyboard while typing. see attached image).
'OK' button is too bright to see it.

I made new scene in my project and built it and tested.
There is also problem in android device.

I made entirely new project and put inputfield in new scene and built it.
And then there is No problem.

There is no script and asset using.

I believe this problem is because of my project settings.
What should I do?