Auto-correct in Writer not removing leading spaces or tabs

I’ve got autocorrect working in OpenSuse LibreOffice Writer 7.1.4.2 in lots of ways apart from removing leading spaces or tabs from the beginning of paragraphs. I’ve got these options set:


What might be going wrong?

Activate Apply Styles. Source: tdf#139986.

Use “Default Paragraph Style” or “Text Body” [paragraph style]. Source: tdf#139963.