If the user does not specify model Scale (in 3D View Toolbox), the scale is computed automatically so as to fit the model on page. That is useful for prototyping.
When exporting an actual model, the scale must be preserved and never calculated automatically. There should be an explicit switch to set fixed scale that will make this behavior clear.
Currently, scale is preserved if it is set to anything else that 1.0. Apparently, it's more annoying than meaningful.
I realised that there should be no Scale setting in 3d view at all. The unwrap should be dynamically recalculated while exporting. Will create a new issue for that.
If the user does not specify model Scale (in 3D View Toolbox), the scale is computed automatically so as to fit the model on page. That is useful for prototyping.
When exporting an actual model, the scale must be preserved and never calculated automatically. There should be an explicit switch to set fixed scale that will make this behavior clear.
Currently, scale is preserved if it is set to anything else that 1.0. Apparently, it's more annoying than meaningful.