bug or feature?

[Alexander Taranov <tay@jet.msk.su>]

Here is a transcript of v103 session:

Welcome to MzScheme version 103.1 (using locale), Copyright (c) 1995-2000 PLT (Matthew Flatt)
> (string=? "" (string (integer->char 0)))
#t
> (string-ci=? "" (string (integer->char 0)))
#f 
> (string-length (string (integer->char 0)))
1
> 

Is it a bug?

AT