Essentially this was missing a call to `super`. The error unfortuantely
didn't arise in the tests as it only errors when the node list has 4
items are more (the 4 columns), and the acceptence tests by change were
only filling the page with 3 nodes for test purposes.
I've bumped the amount of nodes up to 4 in the tests, which then causes
the tests to fail, made the fix by adding the `super` call, and the
tests now pass.
I also tested the UI/text searching on a 10,000 node system, and
everything now works as expected.
3ec70b62a3