When listing armour that I have multiples of it was only listing 1 at a time, I went into settings and noticed that weapons and armour had reverted to 1 where I'd had 0 before, I changed the settings to 0 but it's still only posting 1. Tried relogging and existing the game without any change.

Which item specifically (I've tested a blacksmith's hammer and it works)?

I didn't have weapon multiples but it happened a bunch of times with armour. Might be tied to that iLvl option I had enabled, I'll test that out tomorrow when I relist, but the Max button was available and worked when I clicked it even when it wasn't happening automatically.

Likely the same as the #1207 and this issue is for the Blizzard UI, not Auctionator's. Closing.