The flyout which appears in VE when you click on a footnote currently only shows every second node. This especially means that in many cases links are missing (as the footnote often starts with a simple text, followed by a link, followed by more text, see the following original report for an example), but it is reproducible for other node types as well. Actually, this can be reproduced with almost any article in any Wikipedia. As far as I can tell the flyout currently only displays correctly for footnotes with just one node (obviously) and those that use citation templates.
This regressions seems to have been introduced with 1.29.0-wmf.3
[External links in references no longer properly displayed after clicking on footnote]
Steps to reproduce:
- Go to https://de.wikipedia.org/wiki/Panoramafreiheit
- Edit using VE
- Click on footnote 
- Notice that the preview doesn't correspond to the actual source code. In particular, it doesn't contain a hyperlink (see screenshot below). However, if you click "Edit" to modify the footnote, the hyperlink is contained there as expected.
I'm using Chrome 54 (Win 10).