Screen cast of the sequence
When editing a page with an infobox on the side, header lines that ended on the infobox does not expand to full width if content added above them pushes them down below the infobox.
The opposite works thouhg, i.e. deleting content so a header lines move up shortens the header line so that they do not overlap the infobox.
Version: unspecified
Severity: trivial
Attached: