The tooltip says "New instance ignored".
The Alt+Enter text says "Result of new Object ignored".
The warning ID is "ResultOfObjectAllocationIgnored".
These should be consolidated to a single wording.
If "Result of new Object ignored" is kept, I would also strongly suggest to make "Object" lower-case (or everything upper-case), because it's rather confusing to read "new Object" when the code was "new Foo".
The JLS uses the terms "class instance creation expression" and "array creation expression". Therefore it seems that "Result Of Creation Expression Ignored" would be an appropriate wording.
This is rather cosmetic IMHO --> P4.
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue.
Thanks for your cooperation,
NetBeans IDE 8.2 Release Boss
Still reproducible in current dev build.