Can two or more canvas be populated on the map?

[Hnhhoan]

I understand that one canvas is usually enough to render everything, but is it possible to have multiple canvases exist simultaneously on a map? I tried it, and the second canvas appears to be a duplicate of the first. Is this a bug?

[RodrigoHamuy]

Can you use the sandbox template to create a minimal replicable example? Hard to know otherwise. Thanks!