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alehelandClaude Opus 5.5
2b83ae6a7a
Update Background, Update Watermark and Update Header and Footer previewed the new marks on the page's thumbnail, which still has the marks Update replaces. A pale yellow background updated to light blue showed a muddy teal (the blue multiplied onto the yellow), and a new watermark or header was drawn over the old one. The applied result was right; only the preview was wrong. In Update, the preview now draws the page without its marks of that kind. The engine removes them on a copy of the document (Document::page_without_marks, read-only like the other preview layers), and the dialog renders that page off the UI thread at the preview's size, showing a blank sheet until it arrives. Add, and pages without marks of that kind, keep the thumbnail. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>