It's about the Founder Cape. It's no longer in the inventory of different Minecraft players on the Bedrock version and unfortunately no longer in my case. That's why Mojang please fix this bug

You could unlock the Founder Cape at the time if you played Minecraft in a certain year. The players also wore the cape, used it, but after a certain time the cape had disappeared, and no longer in the inventory, so I hope that Mojang fixes this bug and all players who lost the Founder Cape will come back