Or a website I was trying to fix: the source in view source, and thr stuff on dev tools, never matched each other, even with JS disabled. in the end after days I gave up and the page is in production, crazy bugs and all, because I can't figure why on both chrome and Firefox the webpage end with lots of random "strong" and "span" tags that don't exist anywhere in the original source. The tags aren't even closed properly, some are never closed, some are closed multiple times.