inconsistent slider in the 2d matrix effect

[RiWi-creator]

Wled Nightly release 2025-04-20
2D matrix effect:
The scroll bar from the trail length is inverted.
0=maximum length trail
and
255=minimum length trail

In the file 'FX.cpp'
CODE:
At line 5387:
uint8_t fade = map(SEGMENT.custom1, 0, 255, 50, 250); // equals trail size

SOLUTION:
Change to:
uint8_t fade = map(255-SEGMENT.custom1, 0, 255, 50, 250); // equals trail size

Thank you.
Keep up the good work.
greetings,
RiWi-creator

[blazoncek]

Make a PR if you wish. However be mindful that current behaviour is implemented for over a year and many users may have presets set-up which will work incorrectly after the change.