Forum:Mysterious edit button with no text

Special:NewFiles has a mysterious edit button with no text there, but edited by all users, what is this known bug?

Other pages are affected by this bug. This bug is related to wikis
 * You can use Special:Contact to report that issue. https://vignette.wikia.nocookie.net/upncbs-wiki/images/9/92/Paramount_Pictures.svg/revision/latest/scale-to-width/90 Paramount1106   📝 ⛰ 12:14, 22 June 2021 (UTC)