disappearing keyboard

[strada]

Any one else had this problem when trying to post on forums using a lumia ?
you tap in the box to add text,your keyboard pops up then goes back down again
Had no problems on this forum,on others its rubbish

 

[BrokenBiker]

I just generally have that problem with my htc on android.

no matter what I am trying to type, if its something online, I have to try 4 or 5 times to get the keyboard to stay up