At the right side of the header, where the profile icon is, it shows your experience and current percentage to leveling up. Let's say one has 17,400 out of 40,000 xp and needs another 22,600 to level up. When the compact header is enabled, it instead says 17 out of 22 xp. Other than the last three digits missing, the biggest issue is that it incorrectly uses the amount of xp remaining instead of how much is actually required to level up. This can lead to weird situations like 38/21 instead of 38,050 out of 50,000 and 21,950 remaining. However, the percentage and xp bar are accurate, which may also cause confusion for the false information.

Also, if the compact header is disabled, there are only two or three page icons followed by a "...", creating empty space. Wait long enough and the icon list will expand back to normal, but if the compact header is reenabled after this on the same page, no icons appear, most text is cut off, and the community tab is completely missing. This bug could be prevented if only the icons are presented on the icon list (the name appearing after hovering over it with a mouse) in the compact header. Additionally, the "content" icon has a white/black border around it (possibly an oversight) and the grass blocks/polished blackstone bricks between the header and background are missing (light and dark mode, respectively for both).