Adding new sections of landscape break my material.

I have been working on my game for over 2 years now, the game has evolved and I have now come to the conclusion that the map was too small so I added new landscape sections using the Landscap Manage tool but it wont allow me to paint my landscape material textures on to it, instead it looks like there are UV issues within the new landscape section.

Example :

Solved it,

For anyone that runs into the same issue;

It was a simple fix, the issue was caused by the fact I use runtime virtual textures and forgot about the runtime virtual texture volume.

All I had to do was refresh the bounds of the volume as they don’t update in realtime.