When accessing http://en.wikipedia.beta.wmflabs.org/wiki/ the first time since the deployment a dialog appeared on the top left inviting me to try out Content translation. Note that on this (normal) page view, there is no call out tooltips on the "Beta" link, just the dialog.
The landing page after clicking that dialog is http://en.wikipedia.beta.wmflabs.org/wiki/Special:ContentTranslation?campaign=newarticle&targettitle=Test%3AMediaWiki%3AGroup-user.css&to=en.
On that page, there are two call out tooltips on top of each other around the "Beta" link, making the message unreadable.
See screenshot for the actual conflict. This is makes for a poor first-user experience when being welcomed.