The bug
When you held ctrl on a mac and clicked it used to right click on other Minecraft versions but something inside the 1.13 snapshots removed this.
Related issues
is duplicated by
Comments


https://bugs.mojang.com/browse/MC-13695
It's a problem in LWJGL 3, I assume. Game is unplayable on Mac laptops without a fix for this.
Yes, that issue is already linked to this report.
As a workaround, you should be able to set your "use" key to something else than right click (for example, Enter) in the control settings.

In System Preferences you can set a right click button for your mouse or trackpad.

Yeah this was happening to me, too.

The control right click used to be the default right click for Mac users in the past versions (although it always displayed it as right click in the controls menu). Now in the 1.13 snapshots (like 18w19b) when we Mac users try to control right click, the game considers it as the attack/break action. We also, cannot set the right click to control right click in the controls menu for some reason (I think its because we can't set two keys for one action).

And also if you set the right click function to something else, it is hard to do, get used to, and hard to play. I am also experiencing this problem

1.13pre1 is also affected by this bug I am afraid

1.13pre3 is also affected, when will this be fixed?! it is obviously the most pressing issue going on right now! It renders players unable to play! 😞

Affects 1.13-pre4, despite the LWJGL update

Affects Minecraft 1.13-pre5

Affects Minecraft 1.13-pre6

Affects 1.13-pre7

Affects 1.13-pre8

Affects 1.13-pre9

Somehow this has been fixed in 1.13-pre10 but it was not included in the release notes or updated on this ticket (It could have been a coincidence or on purpose)

Can anyone else confirm the fix in 1.13-pre10?

Confirmed fixed in 1.13-pre10

It seems like they fixed it apon release.
Note that this is best demonstrated by using a Mac laptop trackpad. Ctrl-Click on a trackpad should send a right-click.