This ticket is a duplicate of [MCPE-20422] because this one was written in french. So I'll try to translate (sorry for the errors I'll probably make).
In survival, when you have an inventory like in picture 1 and you try to organize it (just selecting items to move them or using a chest) (picture 2) everything is okay during a few minutes (picture 3). But then, it turns back like it was before (picture 4).
[^IMG_2476[1].PNG]
[^IMG_2477[1].PNG]
[^IMG_2478[1].PNG]
[^IMG_2483[1].PNG]