Beast Capture Rate

I heard that the beast capture rate changes depending on the number of party members. It used to be around 20% with a full 6-man party, but after the 3.27 update, it seems to have dropped to about 10%.

I tried to figure out what changed — in 3.26, mercenaries were added, and that patch adjusted several systems affected by party size. But since mercenaries were removed in 3.27, I’m wondering if the capture rate got nerfed along with them.

If mercenaries get added back, maybe the capture rate will return to normal, but who knows when that’ll happen. Of course, this is just my guess — I could be totally wrong about the mercenary connection.

So I just wanted to ask: is this capture rate nerf intentional, or is it possibly a bug?