It was one of the few bugs that they actually fixed.
That’s what I thought.
The thing is, you invested into something that was abusing a bug, knowing in the first place that something’s not right there, so you should have known the risks (by the way, to a lesser extent, this might also apply to the Artillery Strike shenanigans). I would understand if someone were unhappy about spending renown on an equipment upgrade, only to find out that it’s not actually working — yeah, this should be fixed.