Problem

Usingsupxlabel orsupylabel in a constrained layout with auto-positioning andw_pad=0 orh_pad=0 results in labels that have no spacing with respect to the tick labels. Manually changing the position disables the auto-positioning, which makes everything much more difficult.

It would be great if, in that situation, the constrained layout could takeaxes.labelpad into account and apply that as a minimal padding.

NB: The same might apply tosuptitle andtitlepad, but I am not sure.

Proposed solution

I think this only requires a change to themake_margin_suptitles() function, but I am not knowledgeable enough to implement such a change.