File twice in the same spot

[jokohoko]

Version

2.2.0

Operating system type + version

Any

3D printer brand / version + firmware version (if known)

Any

Behavior

This might not be the most common issue but I have seen this happen multiple times when colleagues use the printers.
They import a model and in some way load it twice. (I guess opening it double, maybe since they are in the G-code tab and don't see their model straight away or copy-pasting it or something...).
This makes that you see your model as you desire, but the model is placed twice in the same spot.
The slicer slices without an issue and looks good, but has every print line double. Thus the printer makes an ugly messy blob.
Especially users in the simple interface setting don't see this since they don't have the model tree.

Is this a new feature request?
Maybe? It's more like an extra safety request.

Project File (.3MF) where problem occurs

cat.zip

[rtyr]

There is a similar feature request #4788, which is more generic. I am closing this one. Your issue will be linked.