The issue in this thread was indeed fixed. As of this time the only reason a shared sheet should be redirecting is if they did not marked it as shared.
Could you link the sheet you are having issues with?
Can you check if you have sharing set on for that character? You click the character name, which opens the management sidebar. Then scroll down to “Character Sharing” and set the viewing permissions. The default is “Me only”, you’ll want “Anyone with a link”.