Guild Wars 2

A couple of patches ago, the notes said this about Guild Challenges:

• Guild Challenge success and rewards functionality has been brought in-line with other mission types.
• Mission rewards are no longer limited to the triggering guild. All participants with the mission active will receive commendation rewards upon success.
• Upon success, participants from non-triggering guilds with the mission active will be prompted with the option of accepting mission success. This prompt is currently limited to guild members with “Mission Control” permissions.

I was just wondering if anyone had tested it. Most importantly, does any random player who helps out (and gets event success) get the commendation reward chest? Or is it limited to players in guilds which also have that mission active at the same time (like how it is for Rush)?

Don’t know how it is, but the wording of the notes makes me think it’s the second option, as in, if your guild also have the same mission active or with guild members that can activate missions present, would get the reward chest, but not random players helping out.

Yes, it is the second scenario.
Your guild need to have the same challenge, and then do it along with other guilds that also need it.