As the titel says - in models that have been filtered, the average texel size says 0.000…
That is because RC creates a new copy of the model and you need to do unwrap/texture for it again so that this value is again calculated.
The original model was fresh “out of the box” though, so no prior unwrapping or textuning.
I should clarify that I am talking about the value in the model information. For the fresh, un-unwrapped model, there is the optimal texel size, for any copy, there ins’t. Not a big deal, but still.
When I activate the unwrap settings, it will be calculated, as you said…
If it’s not a bug, at least it’s an inconsistency…