[LO 7.6, Win 11, docx]
DEFAULT PARAGRAPH STYLE has Before/After Text set to 0, First Line Indent is 6.4 mm. The first line will not indent. If I go to FORMAT>PARAGRAPH, it shows First Line Indent is 0 mm. If I change that to 6.4 mm and hit OK, it will not update.
BLOCK QUOTATION style has Before/After Text set to 6.4 mm, will not indent the Before Text, but will indent the After Text. If I change the Before Text setting using FORMAT>PARAGRAPH, it does indent the Before Text. But then double-clicking BLOCK QUOTATION in the right-side menu bar returns it to no indent of the Before Text.