[Bug] Multiple outputs from same column on press of 3 key (3wesd), Viktus Styrka MX STM32F072

[nopunin10did]

Describe the Bug

Keyboard
Viktus Styrka (MX version)

Firmware where Bug Occurs

1. Default firmware compiled by QMK Configurator (default styrka)
2. Personal configuration compiled by QMK Configurator (see attached JSON)
3. Default firmware compiled locally using a recent pull of the QMK master branch
4. Personal configuration compiled locally using a recent pull of the QMK master branch (see attached JSON)

viktus_styrka_nopunin10did_20240529.json

Description of Problem
When the 3 key is pressed (row 1, column 2 on the matrix), approximately 5%-10% of the time there appears to be an overflow of further characters. These characters appear as 32wesd on the default layout and sometimes 32wesd` on my personal layout (since I map the left alt key to operate as a backtick/tilde key when tapped). Using QMK configurator's test page, I can confirm that the left Alt key is being read as pressed as well, along with the 32wesd characters.

These appear to be keys in column 2 of the key matrix. I am not sure why the remaining keys on the fourth physical row of the keyboard are not also output (zx for the default firmware, xc on my personal firmware).

I have verified that this is not a soldering / hardware issue. The bug appears to occur most often shortly after the keyboard has been flashed.

Possible Related Bug
Anne Pro 2 (C15) Nonfunctional #19886

In the bug linked above, the reporter found what might have been a matrix scanning issue. However, the Anne Pro 2 uses an entirely different MCU, so this may just be coincidence.

Keyboard Used

viktus/styrka

Link to product page (if applicable)

https://viktus.design/collections/all/products/styrka

Operating System

Windows 10 Pro

qmk doctor Output

Ψ QMK Doctor is checking your environment.
Ψ CLI version: 1.1.0
Ψ QMK home: C:/Users/alex.ronke/qmk_firmware
Ψ Detected Windows 10 (10.0.19045).
Ψ QMK MSYS version: 1.7.1
Ψ Userspace enabled: False
Ψ Git branch: styrka
Ψ Repo version: 0.25.1
Ψ - Latest styrka: 2024-05-29 02:54:47 +0100 (ef934355f9) -- Workaround for broken ChibiOS startup (#23822)
Ψ - Latest upstream/master: 2024-05-29 02:54:47 +0100 (2f9f000d0c) -- Workaround for broken ChibiOS startup (#23822)
Ψ - Latest upstream/develop: 2024-05-29 06:53:48 +0200 (4d32073681) -- BastardKB: remove legacy board `tbk` (#23818)
Ψ - Common ancestor with upstream/master: 2024-05-29 02:54:47 +0100 (2f9f000d0c) -- Workaround for broken ChibiOS startup (#23822)
Ψ - Common ancestor with upstream/develop: 2024-05-29 02:54:47 +0100 (2f9f000d0c) -- Workaround for broken ChibiOS startup (#23822)
Ψ All dependencies are installed.
Ψ Found arm-none-eabi-gcc version 10.1.0
Ψ Found avr-gcc version 8.5.0
Ψ Found avrdude version 6.4
Ψ Found dfu-programmer version 0.7.2
Ψ Found dfu-util version 0.11
Ψ Submodules are up to date.
Ψ Submodule status:
Ψ - lib/chibios: 2024-02-17 19:20:06 +0000 --  (be44b3305f)
Ψ - lib/chibios-contrib: 2024-04-03 20:39:24 +0800 --  (77cb0a4f)
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: 2023-02-12 20:19:37 +0100 --  (a3398d8)
Ψ - lib/lvgl: 2022-04-11 04:44:53 -0600 --  (e19410f)
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

[nopunin10did]

After recompiling and reflashing, I'm still getting this issue, but with a different key.

The 4 key yields:
45rtfg

Again I think these are all in one column of the matrix.

[tzarc]

Try adding something like this to your keymap's config.h to see if it helps:

#define MATRIX_IO_DELAY 100

Or, seeing as you've got a json:

{
	/* the rest of your keymap here */
	"config": {
		"matrix_pins": {
			"io_delay": 100
		}
	}
}

[nopunin10did]

I can confirm that the problem still occurs even with that io delay set.

viktus_styrka_nopunin10did_20240625.json