Minecraft Java Edition switches from GLFW to SDL3

Sources: Minecraft 26.3 Snapshot 4 notes, HN discussion
Summary: Minecraft 26.3 Snapshot 4 replaces GLFW with SDL3 for window management, input, and platform integration in the Java Edition. Keyboard input now uses SDL scancodes for physical key positions and keycodes for layout-dependent text shortcuts, the Raw Input mouse option is removed in favor of relative mouse mode during play, Borderless Fullscreen becomes the default, and Linux can use Wayland natively. The notes list known crashes in exclusive fullscreen on Wayland and on multi-monitor Windows.
Comments: HN commenters note the game had stayed on GLFW, which has not shipped a release since early 2024, and that osu recently made the same move with latency gains. Some question the benefit since Minecraft uses only SDL3's window, input, and platform features and keeps its own renderer.
Why it matters: Moving a very widely run Java application to SDL3 brings native Wayland support and physical-key bindings, and adds a large real-world test of SDL3 as the GLFW replacement.