Guild Wars 2

Historian in Orr gives a 50% buff for about 30 seconds after you complete the event.
This buff over writes the 50% buff from Black Lion.
How is that fair to people spending money/gems/gold on this item?
I got a good 10 maybe 15mins before realizing it had been overwritten.
I still had my karma and xp boost on.

Bumping because this happened to me today.

Stay away from Historian Fia! She’s a nasty boost thief!

I lost 30 minutes of magic find.