Not sure really where this lies. And it doesn't seem to have any other affect that I am aware of, but this just started with the latest upgrade - 24.3.
I typically select an outlined piece of text and copy it then create a new document that is a couple of inched bigger and paste it in. I do this when I am creating production files for large-format kiss cut vinyl production.
What I have been doing is selecting the text then referring to the dimensions when I create the new file for output. However, today I noticed that when I use the keyboard shortcut "Cmd N" to do so, Illustrator shifts the decimal one place to the left. so, for instance, when the true measurement is 33 x 56 inches, hitting "Cmd N" shifts the described dimensions of the selected object to 3.3 x 5.6 inches.
It doesn't cause any known issues that I am aware of, other than my initial confusion, but I thought you should know in case it may be linked to something else or inadvertently affect something else.
Attached is a video demonstrating what I mean.