Issues with shields during rendering.

[IMB11]

https://github.com/IMB11/ExtraShields

uses fabric shield lib shields, see their model's GUI display configuration here: https://github.com/StellarWind22/Fabric-Shield-Lib/blob/main/src/main/resources/assets/fabricshieldlib/models/item/fabric_banner_shield.json

[IMB11]

Workaround: use https://modrinth.com/mod/icon-exporter

[Su5eD]

This should be fixed in the 1.21.7 version of the asset exporter, which now uses vanilla's item renderer.