Whenever I add mod and addon packs it keeps showing a box 'Welcome to the Control Customization screen' with two boxes, one saying 'drag elements to reposition' and the second saying 'modify settings' with an option of 'let's go' which upon clicking does nothing and it stays on screen until removal of any packs including the default original texture pack.
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We're tracking this issue in MCPE-166445, so this ticket is being resolved and linked as a duplicate.
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