Item frames on the back of a piston drop upon retracting

Minecraft: Java Edition - Item Frame Issue - Pistons

Item_Frames behind a Pistons front will be removed when returned to its original state.

This may not be an issue, but I was willing to take the time to approve.
(May Work as Intended)

Photo 1 (1.png) - This was taken after I activated the Piston while the item-frames were placed.
Photo 2 (2.png) - This was taken after I returned the Piston to the original position. The Item_Frame on the back side was removed, the others remained.

Thanks, hope you guys will look into it, if it turns out to be an issue!

Pecano