• Fix attribute value assotiation for multiple attributes - #15665 by @IKarbowiak
• Raise 404 when the image for thumbnail creation cannot be open - #15648 by @IKarbowiak
• Add lock on PreorderAllocation on deactivation preorders on variant - #15631 by @IKarbowiak
• Handle AuthenticationErrors in OpenIDConnectPlugin - #15612 by @IKarbowiak