When right clicking on an item in the inventory and picking an 'Attach To' point, the item continues to connect to the last set attachment point.
For example, I create a belt. By default, it attaches to my right hand.
I take it into my inventory, tell it to attach to my spine.
It attaches back to my right hand.
Logging into a different version of the viewer, changing the attachment point and logging back into 1.19.1 (0) will change where it is attached, but it will continue to keep going to that one point.
For example, I log into 1.19.0 (5), tell the belt to attach to my spine, it does so.
Log out of 1.19.0 (5) and back into 1.19.1 (0). Wearing the belt, it defaults to my spine.
Tell it to attach to my left shoulder, it attaches to my spine.
I hope this can be fixed soon. I like to use Windlight and I have to use 1.19.1 (0) because when I open 1.19.0 (80044), it forces me to download and use the updated version.