LSP freaking out when encountering a union

[xThuby]

This bit of code seems to panic the LSP.

Here's the error
[ERROR][2026-02-06 12:03:38] ...lsp/handlers.lua:562 "Exprected union body! /Users/xxx/Projects/hellrun/src/input.jai:82:26"

Input_Node :: struct {
//     <--- this is line 82 --->
    using code: union kind: Input_Node_Kind {
        scancode: SDL_Scancode;
        gamepad_axis: SDL_GamepadAxis;
        gamepad_button: SDL_GamepadButton;
        mouse: Mouse_Direction;
    }

    held: bool;
    value: float;

    axis_contribution: Axis_Contribution;
}

Could be related to #28, however moving the using code bit to a separate line doesn't change the error, or which line it points to in any meaningful way.