Jatizso Fremennik banner shows triangles

[sz-piotr]

Describe the bug Jatizso Fremennik banner shows triangles in its geometry and shadows despite not having them visible in the base game.

To Reproduce Steps to reproduce the behavior:

1. Go to Jatizso
2. Stand before the southern gate

Expected behavior The banner doesn't show visible triangles.

Screenshots

https://user-images.githubusercontent.com/17070569/170863377-81a98106-78fa-4871-91b7-191e4503eb79.mp4

https://user-images.githubusercontent.com/17070569/170863390-4fe20834-f374-4b26-b069-4e225e4b966b.mp4

Environment (please complete the following information):

• OS: Windows
• RuneLite version: 1.8.21
• Launcher version: 2.1.3