Thank you for reporting the bug. We have corrected it for the next release. Meanwhile, you can make the correction in the \DesktopModules\Revindex.Dnn.RevindexStorefront\Portals\_default\Display\ProductDetail\StandardRegular\Display.cshtml file template near line 882:
DynamicFormResult: $dynamicFormResultFields.children().length ? $('<div />').append($dynamicFormResultFields).html() : null