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Dithering not applying with a profile settings #14526

Description

@S1lv3rro

Device

Kindle

KOReader version

2025.08 and 2025.04

Model and firmware version

Kindle scribe 1st gen; 5.17.2

Issue description

I have a manga folder that has an auto‑applying profile setting:
set rotation,
page crop auto,
margin 0.1,
contrast 1.5,
dithering ON,
etc.

All settings are applied correctly except for dithering.

The switch is flipped on, but the dithering is not applied. It’s not a refreshing issue—I tried manually refreshing the page and moving forward and backward, but it didn’t help. The only solution is to go into the style settings and turn dithering off and on again.

I also tried creating a test profile where the only setting to change was enabling dithering, and that also only flipped the switch without actually changing the image rendering style.

Steps to reproduce

  1. Create profile
  2. Click on edit action list
  3. Scroll down to fixed layout documents (Im using .cbz for my mangas)
  4. Enable dithering
  5. Open cbz file with a more complex shading
  6. Run the profile

Image

Image

Log

Additional information

problem persisted on both - full moon and parasol

crash.log

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