This was introduce at r10888 with the idea of "With this landing both <input type=button> and <button> will now look like OS X-style widgets." and maybe we should check if this is still the desired approach for our form controls.
<rdar://problem/91392072>
Maybe should dupe this and reopen bug 50413?
(In reply to Radar WebKit Bug Importer from comment #1) > <rdar://problem/91392072> https://github.com/WebKit/WebKit/commit/100909dabdebd9e08c2472caca086b5162e58315 I discussed with Aditya on Slack and we are thinking of removing old addIntrisic from SDK: https://github.com/WebKit/WebKit/blob/main/Source/WebCore/style/StyleAdjuster.cpp#L512 and see how it goes. Let me know if there are any other inputs before I do PR some time this week.