[Bug] Macros working weirdly in Windows

[marcoXbresciani]

Describe the Bug

Hello all,
I'm using an ErgoDash v1 keyboard with QMK_SYS v1.2.0 and QMK Toolbox v0.3.3 on Windows 11.

I've recently updated my keymap.json to simplify it and (some) macros have stopped working or are working in a strange way in some places.

For example, the QK_MACRO_6 for printing tilde (~) using Windows Alt Codes works here, as you can see, and also in LibreOffice Writer and in browser (LibreWolf) address bar but prints ► in Notepad++ and Windows Notepad, that never did.
(I'm using Cascadia Code font, in Notepad++, and copy-pasting the ~ I can see the ~ properly, but the macro prints that weird triangle.)

At the same time, some other macros Alt Codes-based like QK_MACRO_0 (À) and so on, are working in some (most) environments (here on the web while creating this issue, LibreOffice, ...) and are instead doing nothing in Notepad++ or Windows Notepad.

I even restored older versions of my keymap (e.g. "version 10", that I'm sure were working fine, and they have the same weird behaviour.

I'm still on QMK Toolbox 0.3.3 since a while. Today I updated QMK_SYS (from 1.1.8) hoping it would've helped, but the issue remains.

Hints?

Keyboard Used

omkbd/ergodash/rev1

Link to product page (if applicable)

https://github.com/omkbd/ErgoDash

Operating System

Windows 11

qmk doctor Output

Ψ QMK Doctor is checking your environment.
Ψ Python version: 3.12.12
Ψ CLI version: 1.2.0
Ψ QMK home: C:/Users/marco/qmk_firmware
Ψ Detected Windows 11 (10.0.26200).
Ψ QMK MSYS version: 1.12.0
Ψ Found QMK tools distribution directory: C:/QMK_MSYS/opt/qmk
Ψ Found QMK toolchains: windowsX64:baremetalARM:a55a2b0, windowsX64:baremetalAVR:a55a2b0, windowsX64:baremetalRV32:a55a2b0
Ψ Found QMK flashutils: windowsX64:636c439
Ψ Userspace enabled: False
Ψ Git branch: master
Ψ Repo version: 0.31.5
Ψ - Latest master: 2026-01-01 23:19:14 +1100 (99b5b9ab7f) -- [CI] Regenerate Files (#25920)
Ψ - Latest upstream/master: 2026-01-01 23:19:14 +1100 (99b5b9ab7f) -- [CI] Regenerate Files (#25920)
Ψ - Latest upstream/develop: None
Ψ - Common ancestor with upstream/master: 2026-01-01 23:19:14 +1100 (99b5b9ab7f) -- [CI] Regenerate Files (#25920)
Ψ - Common ancestor with upstream/develop: None
Ψ All dependencies are installed.
Ψ Found arm-none-eabi-gcc version 15.2.0
Ψ Successfully compiled using arm-none-eabi-gcc
Ψ Successfully tested arm-none-eabi-binutils using arm-none-eabi-size
Ψ Found avr-gcc version 15.2.0
Ψ Successfully compiled using avr-gcc
Ψ Successfully tested avr-binutils using avr-size
Ψ Found avrdude version t
Ψ Found dfu-programmer version 1.1.0
Ψ Found dfu-util version 0.11-dev
Ψ Found diff version 3.12
Ψ Found dos2unix version 7.5.3
Ψ Found git version 2.52.0
Ψ Found make version 4.4.1
Ψ Submodules are up to date.
Ψ Submodule status:
Ψ - lib/chibios: 2025-05-15 08:25:11 +0000 --  (8bd61b8043)
Ψ - lib/chibios-contrib: 2025-10-03 18:22:15 +0200 --  (8d863d9e)
Ψ - lib/googletest: 2021-06-11 06:37:43 -0700 --  (e2239ee6)
Ψ - lib/lufa: 2022-08-26 12:09:55 +1000 --  (549b97320)
Ψ - lib/vusb: 2022-06-13 09:18:17 +1000 --  (819dbc1)
Ψ - lib/printf: 2022-06-29 23:59:58 +0300 --  (c2e3b4e)
Ψ - lib/pico-sdk: 2025-04-20 21:24:29 +1000 --  (d0c5cac)
Ψ - lib/lvgl: 2022-04-11 04:44:53 -0600 --  (e19410f8)
Ψ QMK is ready to go

Is AutoHotKey / Karabiner installed

• AutoHotKey (Windows)
• Karabiner (macOS)

Other keyboard-related software installed

No response

Additional Context

No response