On real Wotlk server it was like this , like it is now on Classic.
https://www.youtube.com/watch?v=TJfjY9QfRSU
Time 0:50
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On real Wotlk server it was like this , like it is now on Classic.
https://www.youtube.com/watch?v=TJfjY9QfRSU
Time 0:50
If you are sure of it (in other words, you are not asking for confirmation) I invite you to post this in the bug tracker.
https://www.warmane.com/bugtracker
Doubtful that "Classic" can be used as proof in such situations. It has a lot of bugs, it has different engine, different balance patch version.
To make it 100% valid, you need to find subject from actual retail WotLK that was true at patch 3.3.5a time
shatter shield, frost nova and water elemental' nova shares (as they should) the same DR
on the classic (3.4) the talent is reworked > "Frost Nova-ALIKE", which is similar to the newer expansions tier system talents where similar to original effects doesn't share diminishing returns to make them more viable/useful