Blocks are not staying where they were dragged/dropped.
Steps to reproduce:
Go to a course with a bunch of blocks.
Add a new block such an RRU Reports block.
Drag the new block to the bottom.
Reload the page, and the block will probably not be where it was dragged.
Video demonstrating the issue: (no audio)
In this video I try to add an RRU reports block. I drag the block to the bottom. Reloading the page causes it to appear half-way up. I drag the block one-by-one to the bottom. Clicking reload causes the block to appear one up from the bottom. Dragging the other block past it finally allows the new block to remain at the bottom.
Our current solution is to drag the block one-by-one to the intended position, reload the page, and then drag any blocks past the block you want to move one-by-one. This is time consuming, and many people don't realize that the block isn't actually going to stay in the correct location so the blocks in the course end up with incorrect ordering.