Copy/Paste from AI to PS or ID scales object to 1/10
My typical design process involves creating an AI document with multiple artboards, sometimes dozens, so that I can experiment with several options and iterations on those options. With the latest versions of CC, copying a vector object and pasting into either PS or ID ends up scaling that object down to a tenth the size of the original. I've recently been made aware that AI might create a larger pasteboard to accommodate the number of artboards, but I'm unsure why that would have an affect on the scale of a vector object. I keep all my raster and resolution settings at 300 dpi so that shouldn't be the issue.
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Resolution is not how the scaling coefficient is applied to a 'large canvas' document.
It is done internally and a user has no control over it.
Whenever you create a file that is larger than a fixed size in points (all document in Ai are basically point-based internally), it is switched to 'large canvas' mode, that is basically a scaled tentimes:
https://community.adobe.com/t5/illustrator/larger-canvas-in-illustrator-24-2-100x-more-space/td-p/11243556The fact that it is a 'large canvas' is not displayed anywhere on a surface, and your problem is definitely a bug.