Bug WebPath returning null...again

I am having issues doing some basic navigation on osrs in Ardougne. I am trying to walk between the stalls and the north bank. Starting with an easy test, moving 6 tiles it appears to work fine, but when I try to move a few more both in pretty empty space, it returns null. I put my client debugging on maximum and I don't get any debug/warning information at all.

Below is the example that appears to be failing. Typically I would use the buildTo method instead, but this should be a better example.

I hope its something that I am simply doing wrong. That would be super.

Code (Text):

1. WebPath webPath = Traversal.getDefaultWeb().getPathBuilder().build(new Coordinate(2659, 3329, 0), new Coordinate(2616, 3333, 0));
2. if (webPath == null) {
3.     System.out.println("Webpath failed, trying somethnig else...");
4.     Execution.delay(1000);
5.     return false;
6. }