For some reason after my wiki got updated to 1.33 all texts inside option tags starting with a whitespace are parsed as it happens when you start a new line beginning with a whitespace: a block in monospace font. Before, it just treated it as regular whitespace. I guess it's not intentional.Wedhro (talk) 17:46, 4 July 2019 (UTC)
This is indeed an intentional change, done to make the extension more cache-friendly. See the relevant commit.