The + button to add new block works once, but does not work on subsequent button presses. This issue was discovered on the Android Emulator, and has not been reproduced on a real device (attempts were made, but the issue was not encountered).

Steps to reproduce:

• Press the + button and choose new paragraph block
• Write some text
• Press the + button again and choose a new paragraph block

Result:
A new paragraph block is not created. The focus changes to an already existing block.

Screenshot: