FB 4.0.3.2973, database with dialect 3.

SET BIND OF TIMESTAMP WITH TIME ZONE TO varchar(128);
select timestamp '2023-08-29 01:02:03.0123 +3:0' from rdb$database;

Server returns string "29-AUG-2023 1:02:03.0123 +03:00"

I think. when client uses dialect 3, server should return "2023-08-29 1:02:03.0123 +03:00"

The second problem(?) - server ignores the size of VARCHAR. It returns the string with 57 symbols.

RDB$TIME_ZONES table says that TIME ZONE name can be up to 63 symbols.