This bug happens when you disable the sticky ness for the top navigation bar in your site preferences.
Then, search for any user on the main site or meta logged in as a moderator. I do hide the left nav and this doesn’t happen when I log out. I also hide left nav if you want to reproduce this.
Any user page breaks the layout as do edit history links:
Note that every user profile renders broken, this isn’t about one or a few profiles but all user pages on the site. Similarly, every edit revision page is broken, not just the one sample linked above.
The top navigation shows a noticeable white space gap approximately 10% of the width of the page.
Browsers that I can reproduce this are:
- Safari 11 and 12 on macOS 10.13.6
- Safari 12 on macOS 10.14
- Safari on iOS 11.4.1
- Safari on iOS 12.0
- Firefox Focus 7.0.2 on iOS 12.1 with default settings for the browser
I have disabled all content blockers / safari extensions and verified this breaks on multiple networks (work / home / library / coffee shop) and that it’s only when I’m signed in and on a subset of pages like user pages listed.