3.2026.718

New Features

• Spreadsheet viewer upgraded to an editor: Excel workbooks can now be edited and saved directly. Formulas are recalculated as cells change, while saving preserves the original workbook structure wherever possible.
• New changelog browser: the desktop settings and website changelog now include version search, a release list, and pagination, making specific releases easier to find in a long history.

Improvements

• Excel previews closer to the original: improved rendering for cell styles, borders, merged cells, row and column sizes, frozen panes, hyperlinks, comments, data validation, conditional formatting, sparklines, images, shapes, and charts. Hidden worksheets are no longer shown.
• More consistent editor and chart themes: viewers including Markdown, Mermaid, PlantUML, Graphviz, Jupyter, palettes, flight logs, and SRT telemetry now follow the active light or dark theme more accurately. Exported Markdown HTML also uses the current theme.
• Clearer workspace navigation: the bottom gallery shows full tooltips for truncated filenames and keeps native horizontal scrollbars from covering names. File tree, view-mode controls, and narrow-window layouts are also more stable.
• More reliable Markdown editing: switching between source and WYSIWYG modes now synchronizes the latest content first, preventing rapid switches from leaving content or the table of contents behind.
• Lower startup memory usage on Windows: workspace restore now initializes only visible tabs. Inactive tabs load when first opened, preventing multiple viewers from allocating memory at startup.

Fixes

• Fixed chat database upgrades blocking application startup. Failed upgrades now retry in the background while preserving a recoverable startup path.
• Fixed search indexing for large folders occupying the main process. Root indexing now runs in a dedicated worker to reduce startup and file-browsing stalls.
• Fixed long labels overflowing in Mermaid, PlantUML, and other SVG diagrams, with stronger SVG sanitization, wrapping, and theme-color handling.
• Fixed PowerShell file-association generation, OpenNext static-asset packaging, OFD and Markdown viewer lifecycle issues, and several dark-theme rendering details.
• Fixed custom Provider model settings not being saved reliably. Newly entered models now receive a valid name and default selection automatically, and editing model IDs no longer drops input focus.

changelog