LinkedHashSet<E> should allow nullable elements

[sdeleuze]

In Spring Framework codebase with JSpecify mode enabled, when specifying

Set<@Nullable String> result = CollectionUtils.newLinkedHashSet(patterns.length);

I get

 error: [NullAway] Cannot assign from type LinkedHashSet<String> to type Set<@Nullable String> due to mismatched nullability of type parameters

If I try

Set<@Nullable String> result = CollectionUtils.<@Nullable String>newLinkedHashSet(patterns.length);

I get

error: [NullAway] Type argument cannot be @Nullable, as method <E>newLinkedHashSet(int)'s type variable E is not @Nullable

LinkedHashSet Javadoc specifies "it permits null elements" so I think this is a bug.