"Map Room" Achievement Not Unlocking

Hello, I have been attempting the map room achievement for some time now and I don't believe there is any mistake in my performance of the feat which should unlock the achievement. I have 9 fully explored maps that are in a 3x3 square and are in the correct order. I have not rotated any of the maps and have tried taking them down and placing them down again many, many times. I have no cheats activated and I have no other maps on display in the area(I saw a report that said this was the issue but it did not resolve it for me). Please help me resolve this so that I may carry out my goal of unlocking every achievement on Minecraft. Thank you!