[user770]

This happend just today, whenever I try to write something on Whatsapp or phone messages the keyboard stops working after i press the space button.
I can type letters as long i don't hit the space, if i do the keyboard wont type anything else.

[Harrie-S]

This happens to more people and we don't know why.
But if you go to setting > keyboard > tap the "Language" > and unmark "suggest text" you can use your keyboard again.
The only problem is that you don't get suggestions anymore during typing.

[torresq18]

This can be fixed uninstalling the keyboards and then re-installing it.

On my WP I have 2 keyboards, English and Spanish. This is how I solve the issue:

1. settings > keyboard > uninstall English keyboard.
2. re-install english keyboard.
3. uninstall spanish keyboard.
4. re-install spanish keyboard.
5. shut down your phone.
6. remove the battery
7. install the battery and turn on your phone.
8. problem should be solved.