Bug: Defend 10 WvW Objectives (Wizard's Vault weekly) not being progressed

[Vegeta.2563]

So enemy was hitting one of the towers my server owned.  They damaged the wall, and were in range of the territory.  I helped kill people and waited around for the timer to expire.  The number never increased when there was a successful defense.

I am unsure how I am able to progress this as I have 6/10, but it's never when defending a tower or a keep.

[Zerashy.6741]

Hey dude. I just wanted to say that I am having the same problem. I am going to try a camp  in case a keep or a tower is not an "objective" as is defined by the weekly.

[Lucy.3728]

I also had problems finishing it with mere tower and keep defence.
What I noticed worked best, was when taking a tower/keep and there were still enemies inside afterwards, to kill those. Right after capturing the defence timer starts when it was a defended structure and killing those defenders, that became attackers, helped filling it.

[DarkShadow.7104]

ArenaNet had the great idea to change how defence works. Until February or so, to get credit for defending an objective you only had to repair a wall. From that update half year ago you have to kill a player who prevoiusly killed a NPC. So GL with those defences, if you don't spend hours on WvW you'll never get that weekly.

[zemiacsik.4590]

Yep, defending objects in WvW is broken. It is not about defending an object anymore but killing a player who probably attacked guards and is still in an object's radius plus some randomness, so GL getting it.

[Axel Moonshine.5013]

Same issue, defending lake tower, disabling the 3 rams, use oil to destroy the rams, try to kill enemy, i was pulled of wall and died, timer went off and no defense reward. Silly.