[Bug] FUZE4 - ISettingsServer command 12 not implemented, breaks software keyboard input

[Tmaster111]

Prerequisites

• I am confident that my issue has not been reported already in open OR closed issues.
• I am able to reliably reproduce the issue on the latest stable or canary version.
• I am not using an unofficial build (Flatpak, Emudeck, etc.).
• I am a silly goose and didn't read these boxes.
• I am a silly goose and DID read these boxes.

Description of the issue

FUZE4 opens a software keyboard for code entry

With IgnoreMissingServices disabled: hard crash — ServiceNotImplementedException: Ryujinx.HLE.HOS.Services.Settings.ISettingsServer: 12

With it enabled: no crash, but the keyboard doesn't register physical key input

Command 12 fires right after ServiceHid ActivateKeyboard, so it's likely something like a keyboard-layout/key-code-map query the software keyboard applet depends on (commands 7/9 on the same service, GetKeyCodeMap/GetKeyCodeMap2, are documented as HID-keyboard-related — 12 looks like a neighboring, unimplemented call)

Root cause narrowed further: base game (SDK 7.3.0, NVN 7.3.0) has working physical keyboard input under Ryujinx. Updated game (SDK 18.3.2, NVN 18.3.2) does not, despite confirmed-correct HID keyboard data delivery in both cases. This points to a keyboard-input-handling difference introduced by Nintendo's SDK between versions 7.3.0 and 18.3.2 that Ryujinx doesn't fully replicate for the newer API path

Reproduction steps

Launch FUZE4

Trigger a code-entry screen (opens the software keyboard)

Try typing on a physical USB keyboard — no input registers (or with IgnoreMissingServices off, the app crashes before this point)

Log file

Ryujinx_Canary_1.3.351_2026-09-02_14-40-00.log

Ryujinx_Canary_1.3.351_2026-09-02_14-42-25.log

OS

Win11 23H2/24H2

Ryujinx version

Canary 1.3.351

Game version

3.2.1

CPU

AMD Ryzen 5 3600 6-Core

GPU

NVIDIA GeForce RTX 2070 SUPER

RAM

32GB

List of applied mods

None

Additional context?

No response