Bug 1665823 - Consider display: none elements as having current style for animation-only traversal. r=hiro This is mostly a band-aid, though it also serves sorta as an optimization. The issue here is basically bug 1393323. By re-cascading, right now we can't come up with the right before-change style if CSSOM has mutated the rules. We really need a better way to come up with the before-change style, as the animation-only traversal is not really sustainable (nor fast, for that matter...). But this avoids crashing and prevents the regression easily, so let's do that for now. Differential Revision: https://phabricator.services.mozilla.com/D90700

Makefile
config-defs.h
config.cache
config.log
config.status