Application/pdf response pops up File Save window

I have a web page that returns a pdf document which displays inline in Chrome ok, but opens up a File Save window in Brave. I have the PDF settings in Brave configured correctly for inline display. The page in question returns http headers of:

Content-Type: application/pdf
content-disposition: inline;filename=“Packing_Note_SO53029.pdf”

I can’t link to it because it needs a login to get at.
Why might chrome behave differently (and perhaps correctly) on this?
Thanks for any hints.