Items in item frames and chests disappear when reloading world

Version: beta 1.16.100.50

There is a serious loophole, that is, all the items in the exit box will disappear, and the items in the display box outside the box will also disappear

I recorded a video, and I can see that although the items did not disappear this time, the items in the display box disappeared

 

Hope the official fix it