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kotlinlang

Are there any known issues regarding JPA and MutableSet? If I run the following code 
```
lru.systemOptions.removeIf { option -&gt; option.systemOptionId == systemOptionType.systemOptionId }
lru.systemOptions.add(systemOption)
```
and the option is added again with different values as before all other options of the set get deleted after `lru = lruRepository.save(lru)` (save call to a Spring Data JPA repository). The returned value still contains them though … any ideas? `lru.systemOptions` is the MutableSet here.