Unable to type into text box.

[ItsAllGoingToBeFine]

I thought it was just me, then another poster on a thread also mentioned it.

Sometimes I type on a thread, switch tabs, go back to the thread, and can no longer type in the box. Keyboard makes all the usual noises, but nothing appears, and the cursor does not move. Can still paste content into the box though.

Mobile site. Chrome on Android.