[Interest] QPainter::drawRect incorrectly "rounds" corners

[Matthew Woehlke]

On 21/10/2020 13.16, David M. Cotter wrote:
> are your pixels specified in floating point?
> have you accounted for the half-pixel offset?

Yes (although there's a related story there; sigh). Turns out the 
default corner style is... unhelpful. Ick.

I still think there's a bug; the corners should at least all be the same...

-- 
Matthew