Cannot use space character in any text boxes

I can't add the space key into any text boxes generated by Minecraft PE. This includes:
*World names
*Signs
*In game chat

This is especially annoying because I have recently bought PlugPE, command plugin for MCPE. There needs to be a space between the object and argument for the commands. This means I can't use it! I know this is not caused by anything in game because it happens in every single place where I input text. Please fix this!