[Bug]: Failure in parsing correct postgresql partially duplicates output

[TrapsterDK]

What happened?

Failure to parse valid postgresql code, sqlfluff handles it correctly.

CREATE FUNCTION test(input_text TEXT)
RETURNS BOOLEAN AS  $$   
BEGIN
    SELECT {test};
END;
$$ LANGUAGE plpgsql IMMUTABLE STRICT; 

[sqruff]
dialect = postgres
templater=placeholder

[sqruff:templater:placeholder]
param_regex = .*?\}
1=test

Formats as

CREATE FUNCTION test(input_text TEXT)
RETURNS BOOLEAN AS $$   
BEGIN
    SELECT {test};
END;
$$ LANGUAGE plpgsql IMMUTABLE STRICT;     SELECT {test};
END;
$$ LANGUAGE plpgsql IMMUTABLE STRICT; 

Here is a play ground link with the entire setup.
https://playground.quary.dev/?secondary=Format#eNpNjl9rwjAUxb/KJfiwjTHYa6WMtMtKoabQpjBYhhS9doUaY3IFQfrdl4iID5dz/5z741yYP04sYXkjuBLw1clclbUEQk9Po7EnWhOeCZT4Vs/aadMI1TWyhayuK8El8BZgsQCAeMxEUcrYhBlaUYlcwSWi5mXcCvl51eCvuCw6Xgiwkx1CBChXq07xrBLQqqbM1fIKjMVemUei0Qw+BP3xR3fa7X612Y79hBuCFOzB0+DQa0O4t1NP6NIgG/w7TFuMGHN7S+6G5MEQYLZ3/X7tcMBzAL69fGg9a/OexvBs/geUFmPL

Version

0.34

Checked in Playground

• I have checked this bug in the playground.