When you rename a column in a model, the orm removes it instead of just renaming the column. Same in the size change, it drops the data instead of just truncating or alerting the user about the issue, to let him/her fix it manually.
Confusing/obscure/unpredictable/broken parts. Sometimes glorious, sometimes goofy. Devs almost abandoned the project. Feels like driving a luxury car with flat tires.