What happened?

I noticed that recent versions of the main branch produce artifacts when using dim brightness levels. I traced it to the merge of #4658.

Here is what 4a3af81 (before merge) looks like with the palette effect at global brightness 4:

And this is 23a51e0 (merge commit) with the same preset:

For completeness, I also added screenshots of the UI. There it looks the other way round.

To Reproduce Bug

Use low global brightness.

Expected Behavior

Some colors produce incorrect colors or off pixels on physical LEDs

Install Method

Self-Compiled

What version of WLED?

WLED 0.16.0-alpha (build 2412040)

Which microcontroller/board are you seeing the problem on?

ESP8266

Relevant log/trace output

Anything else?

No response

Code of Conduct

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