123367
Because of MC-92165 I host I've got various different cart test tracks spread on my several bug test worlds; I noticed a derailed cart in 17w50a and after conducting some simple tests, this can be reproduced relatively fast. Use mc-123367.nbt in 17w50a or mc-123367_1-12-2.nbt in 1.12.2 to test it yourselves.
123367
041b061a72