I'm talking about the Community, Ask, Developer, Design, etc. bar. When viewed on an iPada tablet, the entire bar is shifted to the left of the screen, so that it has no margin and, is directly against the edge of, and has an empty white space at the screenright. Probably a small CSS fix.
This issue is reproducible on Server Fault except with the Stack Exchange bar instead of the Ubuntu bar.
The arrow points to the missing margin. Please excuse the mspaint-edited photo.