I added a preview asset (Skeletal mesh) to a skeleton hand socket attached to the right hand. I was then moving the asset (rotating and drag). Then for no reason I managed to lock preview assets from being manipulated… I cannot select them in the skeleton, I can see them in the preview but cannot select them. I think I must have pressed a key accidentally that caused this but I have no clue what, it has also effected all my projects in version 4.26.1 so I believe it is an editor setting I changed with a hotkey but have no clue how to fix it. Sorry probably a stupid question but very annoying…
I have had this problem, turned out I had to select the socket itself and not the preview asset itself.