Question about Easy-Click - 338377

I bought this case and was wondering if it is normal for the tablet to turn off the screen when I open the case all the way? Presumably the sensor that normally turns the screen off when the case is closed mistakenly reacts to the case lid on the back of the tablet. When I open the cover of the case all the way so that it is on the back of the tablet, the screen goes off and as soon as I remove the cover from the tablet a bit, it comes back on. So the tablet is almost unusable when it is completely open. Did I get a model that came out of the assembly line or is there a system to it?