Using Spine 3.7.87
When I use "import data" and use a scale value, only the bones and mesh attachments take on this scale.
Regular attachments (both visible and hidden) stay at their old scale, and needed laborious readjustment

Original and after fixing look like this:
This is right after the scale, with a few slots at their old scale:
I fixed my own imports just now, but I can imagine this is not working as intended.



edit
I do have "inherit scale" turned off for some of the downstream affected things, that might be related, but for some of the fixes I just did I scaled the whole skeleton (not root, but the actual skeleton name) and that did scale downstream as intended.