質問
Bug in Photoshop 26.10 – Mask painting only works with black, not white
Since updating to Photoshop v26.10 I’ve encountered a severe bug with layer masks.
After using “Remove Background” (or when working with masks in general), painting with black on the mask works as expected (removes areas). However, painting with white does not restore any masked areas.
I’ve been working professionally with Photoshop and masks for years – this is not a workflow or settings issue (foreground/background colors, brush mode, opacity/flow, etc. have all been checked). The problem persists across files, even after restarting the Mac and testing on completely new documents.
This issue appeared only after updating to 26.10, so it seems to be a regression/bug introduced in this version.
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