I noticed that for the last couple of days the Twitter's favicon goes randomly black (and I'm not the only one). Is there any reason?
Why Twitter's favicon goes randomly black?
twitter
As Epoc points out in a comment above; Twitter, Pinterest and some other sites are all early adopters of Apple's new pinned themed favicons. Unfortunately the new favicons hijack the existing favicon syntax which causes conflicts in Firefox as the sites are not declaring the multiple favicons in the correct order.For more detail see the WHATWG email thread https://readable-email.org/list/whatwg/topic/apple-s-new-link-rel-icon-mask-not-quite-favicon-syntax-causing-problems-in-other-browsers-needs-standardization