TerriaJS V7 Problem covering the globe with a geojson polygon on cesium

[yohannist]

Dear terriajs team and community,

I am working on an app that uses a fork of terriajs v7. When I load a geojson that covers the whole globe, both leaflet and cesium do not render it correctly. Leaflet just displays a line at 180 longitude. Cesium shows nothing.

**I managed fixed the issue on leaflet by using a different algorithm to change the cartesian coordinates back into lat/lng (in LeafletVisualizer.js; this is on a terriajs fork). **
However, I am unable to fix the issue on the 3D globe (cesium).
I noticed the issue is fixed on the v8 version of terriajs (See national map share link below).
Can you kindly provide any help, suggestion, or hint that can help me solve the issue?

If you open the link below, it loads a geojson that covers the entire world, but nothing is shown on the globe.

Actual: As seen on terriajs v7##

https://data.apps.fao.org/?share=f-0a726874-03ed-4f96-a8ae-38798289ecac

Expected: As seen on national map,

https://nationalmap.gov.au/#share=s-aCNvRBqtMWkOsBEjyZhrucflS3c

Terriajs version: 7.11.16

Terriajs-Cesium version: Tested on 1.73.1 and on 1.81.3

Nodejs version: 13.7.0

NPM version: 6.13.6

Thank you very much for any assistance you can provide.

Best regards,
Yohannis

[yohannist]

Recreated this as an issue here #6178