Well, when we installed the Dimensions plugin, at first we had a bug with a small and huge world. When switching from huge to small and back, the huge world was cut in half. This problem was solved by turning off the small world and replacing it with a second huge one.
The next bug was that the characters of other players were not visible, although the nicknames in the chat were displayed. Sometimes the characters are visible, but the skin is default.
I hope I’ve come to the right place and won’t waste a lot of your time.