A screenshot of what im working on

Hey, I was building in Minecraft Bedrock and when I was doin /fill command, i found this Allow block, it doesnt bring up any menu, does anyone know what it's/was supposed to be used for, does anyone else know?

Snooftale

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YUP, ITS HAPPEND IN OVERLOOK BAY

Coppper gollem go brrrrrrr

Mr.Carryfish LMAOOOOOOOOOOOO

Big

So you see this backpack? You know that you have to wear it on your back, right?

Well um, i may have...