Assigning non-numeric to input.minlength should set minlength to 0. Test case: http://w3c-test.org/html/semantics/forms/the-input-element/minlength.html Chrome passes this test.
Firefox 51 also passes the test.
(In reply to comment #1) > Firefox 51 also passes the test. Ok, I am still at Firefox 49 somehow :) Anyway, I believe I found the bug.
Created attachment 290211 [details] Patch
Comment on attachment 290211 [details] Patch Clearing flags on attachment: 290211 Committed r206588: <http://trac.webkit.org/changeset/206588>
All reviewed patches have been landed. Closing bug.