VAR CONSTANT, VAR PERSISTENT and VAR RETAIN not recognized

[Roald87]

The following code is formatted as follows

// in
FUNCTION_BLOCK POU
VAR PERSISTENT
	var1 : INT;
END_VAR
VAR CONSTANT
	number : INT := 5;
END_VAR
VAR RETAIN
	y : REAL;
END_VAR

// out
FUNCTION_BLOCK POU
VAR PERSISTENT
var1 : INT;
END_VAR
VAR CONSTANT
number : INT := 5;
END_VAR
VAR RETAIN
y : REAL;
END_VAR

It should not remove the indentation. Probably caused by the space which seperates RETAIN, PERSISTENT and CONSTANT.