TeaStrategist

Here it is on the latest snapshot, on both windows and macOS, and with a video. I’m not running any non-standard display settings, and I have seen the issue on all of my friend’s various systems (all with different GPUs and display setups).

Note that the issue is far less noticeable when playing in higher resolution. (for example it’s harder to spot in the mac screenshot, because it has a high resolution display).

I’m sure this issue is to do with mipmap settings or something along those lines, as you can tell in older versions that at further distances, the leaves are replaced with a less detailed texture, which doesn’t have transparency and therefore doesn’t cause this jarring aliasing. Somehow this has been accidentally disabled or broken in 1.21.11.

This appears to be an issue on all versions through 1.21.11 to 26.2-snapshot-2, in both Vulkan and OpenGL. I've also tested it and it occurs on both AMD and Nvidia graphics cards.