While trying a new translation, the link dialogue decided to appear at the very bottom of the third column, scrolling doesn't change its position.
A minute before this happened, clicking on links in the source language column would pull up the dialogue correctly, but clicking on the links in the target language would GO to the link, in the target language wiki but with the source language wiki's article-name, in the same tab (thereby showing me a redlink 'create this page' inteface' and also leaving the content translator completely. However, I'm not able to replicate this action or show it in a screenshot, but I feel that it must be related.