[Bug] Cannot change brightness of Per-key RGB's General and Breathing effects

[MachFour]

Describe the Bug

When using the Per-key RGB function, "General" and "Breathing" light effects, the brightness cannot be changed. Other effects (single key response/neighbouring key response/whole keyboard) seem to work fine.

This bug affects my Q3 Max and Q6 max keyboards on latest 1.1.1 firmware, and many other keyboard models (K4 HE, K2 max, K1 max, V1 max, C2 pro 8k), as evidenced by this Reddit thread

Steps to reproduce:

• Connect keyboard and go to Keychron Launcher > Backlight tab > Per-key RGB
• Enable Per-key RGB
• Ensure "General" or "Breathing" effect is selected
• Try to set brightness using slider and click "Save"

Expected effect: Brightness changes
Actual effect: Brightness does not change

Using the QMK "Br +" and "Br -" keys also does not change the brightness, unless the "Br -" key is pressed at least 14 times which turns off RGB backlight completely.

So it seems like, any brightness setting from 1-255 becomes max brightness.

Could you please fix it so we can vary the brightness of Per-key RGB when using "General" or "Breathing" effects?

Please let me know if you need more information.

Thank you

Keyboard Used

Q3 max

Link to product page (if applicable)

No response

Operating System

Any

qmk doctor Output

Don't have

Is AutoHotKey / Karabiner installed

• AutoHotKey (Windows)
• Karabiner (macOS)

Other keyboard-related software installed

No response

Additional Context

[bcmatt25]

Same issue on my q3 max, firmware v1.1.1 launcher v1.2.1. Brightness adjustment works fine when I use the standard rgb mode ("Backlight" tab after clicking on backlight in the main sidebar) but not per key.
The hardware shortcuts also function as described in the op. "unless the "Br -" key is pressed at least 14 times which turns off RGB backlight completely" seems to indicate to me that the brightness stepping is being registered, but not applied correctly until it reaches 0.