Stroke changes when dragging a corner to scale
When scaling artwork by dragging a corner (I used the upper right corner) the strokes get messed up. In the included image the left logo has strokes and fills. The right logo has strokes converted to paths. When I reduce the image down 50% using the numerical scale menu by double clicking the scale tool it turns out fine as the top 2 show. Below that are 2 logos I scaled by dragging the top right corner and holding option shift keys. The logo with the stroke shows the outline being much smaller. If I select the 2 the top stroke says 7pt and the bottom image shows 3.5.

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> To be honest I've never found it useful to not scale strokes.
Trust me, there are numerous examples where this is useful. More of it — this is my personal preferred mode of treating strokes. Workflows differ and Ai is versatile.Apart from this — I get the stroke gets scaled twice as it shoul... but I can’t reproduce this. I presume there is something peculiar with the artwork itself...
If you can, please make a duplicate of the artwork, strip details until the bare minimum required to reproduce the behavior, and share the this test file here.
A small video showing the exact approach to resizing it would be helpful as well. -
Mike commented
Yes, scale strokes and effects is checked. To be honest I've never found it useful to not scale strokes. I mentioned on another post that sometimes it becomes unchecked by itself but I did check before I created the example I included. Maybe I didn't explain it well enough. The left logos still have strokes specifically around the background H. The logos on the right the strokes are converted to outlines. They are all reduced down from a larger size. The top two were reduced by numerical value typing in 50% then enter. The bottom two were reduced down roughly 50% by dragging from the upper right corner holding option shift for constraints. You can see the bottom left logo's stroke outline is roughly half the size it should be. Both of the logos on the left are still strokes. I'm on a M1 Mac Pro and Illustrator is the latest version (not beta).
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Mike, not sure I follow.
When you check Preferences > General, is Scale Strokes & Effects option enabled for you?
Do you check this option when using the Scale dialog? The option is global. Once checked in this dialog, it gets enabled across all the documents.
If this is not the case, please share a test file and a video recording of the workflow you are using.