Hello S.
For a workaround, on v1.2020.10/.11 a dummy line (.., --, == or __) below the text is necessary to achieve the expected result; see an answer on Question /4307.
rectangle r as "
Text as top
..
{{
salt
{{T
+ <&folder>Folder1
}
}
}}
"
If that can help,
Regards,
Th.