Oxygen PDF Chemistry: Fixed an issue where resetting a background image using "background-image: none;" caused an "image not found" error.

Oxygen PDF Chemistry: Improved the line break algorithm, especially for non-Latin punctuation marks (such as ideographic characters).

WebHelp Context-Sensitive Help: Resolved encoding issues for non-Latin file names in context-sensitive help mappings, ensuring that targets are correctly identified and matched regardless of character set.

WebHelp output: Corrected the rendering of zoomed images so that transparency is displayed properly in the output.

DITA: Fixed an issue where publishing DITA topics containing syntax‑highlighted code blocks could cause the transformation to fail.

Oxygen PDF Chemistry: Fix exception appearing when processing footnotes in rotated table cells.

Oxygen PDF Chemistry: Fix Matterhorn 11-001 “Note without ID” issue, improving overall PDF/UA-1 accessibility in PDF outputs.

WebHelp search: Fix the "stemmer is not a function" error triggered when the use.stemming parameter is enabled in WebHelp Responsive output.

The initial build of <oXygen/> Publishing Engine version 28.0