If I add an unprefixed link to [[Main Page]] on
https://www.mediawiki.org/wiki/Wikimedia_Engineering/WMF_Tech_Days_2013
using VisualEditor, the link points to [[Wikimedia Engineering/Main Page]] when previewed in VisualEditor (by right-clicking and opening in a new tab). "Review changes" suggests that the correct link will be added when saving the page, so this issue may be limited to the editing surface.
Version: unspecified
Severity: normal