First Android phone, but not first Casio.

My phone (using the standard xt9 keyboard) is having an issue where sometimes, mid-txt, other times completely randomly, the txt in the box will disappear. The phone still knows the txt is being entered...here's an example.

If I'm typing "Hi Jeff, how are you" it may enter as "Hi Jeff, " and then the type quits showing up. The phone knows its being entered because I can see it being spelled under the type box where it guesses the word and you can press it. If i put the phone up/down oriented, this problem goes away and it works fine. AND if i'm typing "Hi Jeff, how are you" and the error happens after the word Jeff, but I continue typing (hoping I"m spelling everything correctly) and i rotate the phone 180 degrees, it shows whatever i was typing, but wont show anything new.

Please help. Only thing I've found is when it starts doing this is to do a battery pull, and I'm having to do that about 4 times a day.