Come On Blizz,
When you find the page you want at the Vendor, touching the track pad with your second finger to right click (make purchase) causes the vendor pages to jump back to pages, then purchase whatever you land on.
So Far I’ve ended up with a 150 gold unsuable item from the AD Vendors
a 15 Real Shaman Totem (I’m not a shaman)
and countless reagents for classes other than my own.
Can I submit Tickets for Refunds caused by this known bug?
Same Issue with Addons such as Pally Power.
When you set a Class to Receive a Specific Blessing, you can override an individual to receive an alternative blessing with the mouse wheel.
On a Mac when you try to Right Click a Buff on an individual, the two finger touch first spins the wheel, and the player ends end up with whatever blessing the spin lands on.
Of corse, I’ve since abandoned the use of Pally Power, and manually select each player, and cast each buff. It’s frustrating though, because it would be such an easy fix for blizz to patch out the two finger touch scroll issue on a Mac, which was only introduced in my version (SoD) during the Phase 5 PTR (Before then, the issue did not exist).
Still happening. So many times I’ve bought the wrong thing because when I click, the vendor page goes back.
FIX THIS.
I get that Blizzard’s Mac team is relatively small and likely has a lot on their plate. I wouldn’t expect an overnight fix. But this is a longstanding issue that has been at the top of this subforum for a month or three now, and we haven’t even had a blue acknowledgement that they’re aware of the problem, let alone that they’re working on it. It takes under five minutes to type ‘We’re aware of this and are working on it’ in these forums. However busy you are, you have enough time for that.
Doubly baffling/enraging given that random other threads in this forum with much less widespread issues get immediate and repeated attention for no clear reason. Not to begrudge them that, but the difference between the two and the lack of rhyme or reason to it is very, very frustrating.
Still ongoing as of 10/21/2024. Maybe fixed tomorrow with 11.0.5?!
Please! 
Unfortunately, this is still a problem for me as of the new patch 11.0.5 on October 22, 2024.
As if i have created a US account. levelled it to 10… just to be able to post here…
EU player, we are also having the issues. I found a more detailed explenation about the two finger touch (not even press just touch) being picked up as “mouse wheel up” you can check this in keybinds by assigning a new key, placing two fingers on the touchpad and it will auto add “mouse wheel up”
Its making the game unplayable, making purchasing items for tokens that cant be returned a nightmare
PLEASE PLEASE FIX THIS
My EU post on this…
Thanks for noticing my post… at least if id have seen this sooner i wouldnt have had to create a us account level it to 10 just to post here… Thanks again, pukka.
hey Bliz, anyone home?
This post has more traffic, comments and interactions that most in the Mac tech forum but still not official reply from Blizzard. Surely someone has seen this and should be able to provide some sort of an update and timescale etc?
This issue is somehow related to steering with trackpad when holding “right mouse button”. I literally cannot fly on trackpad now 
I’d be happy even to see a Green Post, acknowledge the issue.
Annnnnd with the Cata Classic 4.4.1 Firelands patch today, the mouse scroll issue is affecting it too… sigh. C’mon Blizzard, hire some Mac support/Programmers! (or admit you don’t know how to fix it and contact Apple)
Still an issue… Still causing problems with vendors who take tokens that are non refundable. Still a massive issue for mac users. Please someone actually reply on the issue. Its been 2 months nearly now.
Anyone @blizzard acknowledging this or what?
Hey Blizz, while this might not be an instant fix, it would really go a long way if someone could acknowledge it.
I’m trying to get a friend into the game and she’s beyond not interested until this is fixed because it essentially renders the game unplayable (zooming camera constantly, can’t scroll textboxes without flinging it at absurd speed, etc.).
Yep… still not acknowledged. Incredibly annoying bug, can’t go to the last vendor page or bottom of chat without it bouncing back up.
Still an issue for me too… /sigh
Same issue here. It happens in retail and now with the latest patch it happens in classic cataclysm as well. M2 Macbook Air
Still on-going as of Nov 11th, 2024.