Thank you for the link. Apparently I received a batch where this problem has been fixed.
The hinge is not very wobbly when typing and won't move if I lift the laptop carefully. However, it won't stay in position when moving it quicker.
Maybe this is by design so one can open the lid with a single hand. I prefer the sturdy hinge on my old Thinkpads though - it's difficult to open them with one hand but they stay in position when I move them.
Ah, it really did sound like you got one of the defective hinges. Though, you still do have the option of buying the 4.0 kg hinge kit for $24 and installing it. Having to buy a part isn't ideal, at least it's available.
The hinge is not very wobbly when typing and won't move if I lift the laptop carefully. However, it won't stay in position when moving it quicker.
Maybe this is by design so one can open the lid with a single hand. I prefer the sturdy hinge on my old Thinkpads though - it's difficult to open them with one hand but they stay in position when I move them.