mixin issue

MouseHandler.java

    private void onPress(long window, int button, int action, int modifiers) {
        boolean bl;
        if (window != this.minecraft.getWindow().getWindow()) {
            return;
        }
        if (this.minecraft.screen != null) {
            this.minecraft.setLastInputType(InputType.MOUSE);
        }
        boolean bl2 = bl = action == 1;
        if (Minecraft.ON_OSX && button == 0) {
            if (bl) {
                if ((modifiers & 2) == 2) {
                    button = 1;
                    ++this.fakeRightMouse;
                }
            } else if (this.fakeRightMouse > 0) {
                button = 1;
                --this.fakeRightMouse;
            }
        }
        // ...
    }
}

MouseHandlerMixin.java

@BugFix(id = "MC-59810", category = FixCategory.BASIC, env = BugFix.Env.CLIENT, enabled = false, modConflicts = "mcmouser", os = OS.MAC)
@Mixin(MouseHandler.class)
public class MouseHandlerMixin {
    @ModifyExpressionValue(method = "onPress", at = @At(value = "FIELD", target = "Lnet/minecraft/client/Minecraft;ON_OSX:Z", opcode = Opcodes.GETFIELD))
    private boolean doRightClickEmulation(boolean isMac) {
        return false;
    }
}