[css-sizing] Nobody follows the spec about cyclic percentages in min sizing properties

https://drafts.csswg.org/css-sizing-3/#min-percentage-contribution

For the min size properties, as well as for margins and paddings (and gutters), a cyclic percentage is resolved against zero for determining intrinsic size contributions.

That's a lie, nobody does this for the min size properties, and WebKit doesn't do it either for margins. Instead, the entire value is treated as zero, just like for preferred and max size properties.

<!DOCTYPE html>
<div style="width: 0">
  <div style="display: inline-block; border: 5px solid cyan">
    <div style="min-width: calc(50px + 0%)"></div>
  </div>
  <div style="display: inline-block; border: 5px solid magenta">
    <div style="padding-left: calc(50px + 0%)"></div>
  </div>
  <div style="display: inline-block; border: 5px solid orange">
    <div style="margin-left: calc(50px + 0%)"></div>
  </div>
</div>

Spec & Servo	Gecko	Blink	WebKit

Agenda+ to reflect reality (or change the implementations?).

w3c / csswg-drafts

[css-sizing] Nobody follows the spec about cyclic percentages in min sizing properties #10969