SUMMARY Blend mode "Addition" replaced by "Normal" after save/load to Krita (`kra`) file. STEPS TO REPRODUCE 1. Create an empty image 2. Open "Layer Styles" 3. Check "Gradient Overlay" 4. Set "Blend Mode" at "Gradient Overlay" tab to "Addition" 5. Save document to `kra` file 6. Load document OBSERVED RESULT Blend mode of "Gradient Overlay" became "Normal" EXPECTED RESULT Blend mode of "Gradient Overlay" is "Addition" SOFTWARE/OS VERSIONS Windows: Windows 10 ADDITIONAL INFORMATION Same thing happens with other effects.
I can confirm this with the 4.2.8 appimage.
"Addition" blending mode is not supported in ASL layer styles file format. In newer versions of Krita this blending mode is just excluded from the list of available blending modes in layer styles dialog, so it is impossible to select that at all. *** This bug has been marked as a duplicate of bug 423496 ***