Multiple users at en.wikiquote report these symptoms in v1.17wmf1:
- Upon saving and edit, the prior revision of the page is displayed, without modifications made in the saved edit.
- Upon saving a new page, the "project does not have an article with this exact name" screen is displayed.
The problem is intermittent, with reports of frequency ranging from 20% to 90% (higher for users having gadgets enabled). The problem is observed in multiple browsers.
For users' original descriptions of the problem, see http://en.wikiquote.org/wiki/Wikiquote:Village_pump#Details_for_Bugzilla_report
(Cf.: Old bug 5311 describes this failure mode. A comment at newer bug 24737 mentions the same failure.)