PLAIN password scheme issue with {}

[Kris von Mach]

Hello,

Using PLAIN password scheme and a user having a password with {} for 
example {RnDR8DaD} causes the authentication to fail:

auth-worker(85632): Error: conn unix:auth-worker (uid=143): 
auth-worker<3333>: sql(user at domain.com,123.45.68.78,<EBh0ouPWULvTF5AQ>): 
Unknown scheme RnDR8DaD

Is there some sort of a workaround for this other than requesting user 
not to use {} at beginning and end of their password?