Whisper text is truncated

Whisper message text is quietly truncated to 50 characters on send. So the sender sees the full message, but the recipient sees only the truncated message.

E.g.
Pasted in (68 chars): Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendiss
Received (50 chars): Lorem ipsum dolor sit amet, consectetur adipiscing

Pasted in (51 chars): 012345678901234567890123456789012345678901234567890
Received (50 chars): 01234567890123456789012345678901234567890123456789

Pasted in (80 chars): ....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
Received (50 chars): ....1....1....1....1....1....1....1....1....1....1