3d-tiles and Columbus View with Webmercator

1. A concise explanation of the problem you’re experiencing.

I am testing two 3d-tiles models that align together in a certain way using Scene3d-mode and Columbus view-mode. I setup Columbus view like this:

sceneMode: SceneMode.COLUMBUS_VIEW,

mapProjection: new WebMercatorProjection(Ellipsoid.WGS84)

The two 3d-tiles are separated this way: one has a box and one has edge lines for the same box. In Scene3D mode these 3d-tiles align perfecly well, but Columbus View with Webmercator introduces offset between models. Would someone have any ideas what is going wrong here?

2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.

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4. The Cesium version you’re using, your operating system and browser.

I believe this is the same issue as here, which I’ve just responded to: