• Crash — Fixed a crash related to push-triggered sync.
• Daylight Saving Time — Fixed a class of problems centered around repeating items and daylight saving time.
• First Run Experience — Fixed a problem with keyboard navigation on the OmniFocus launch screen.
• Free Viewer — Fixed problems with Free Viewer mode.
• Repeats — The next iteration of a repeating item now picks up the appropriate (depending upon repetition method) default due and/or defer time when completed without any dates assigned.
• VoiceOver — Made several more improvements to VoiceOver in OmniFocus.
• Localizations — Updated localizations.

OmniFocus 3.1 adds localizations, a light sidebar option, and automatic theme switching in macOS Mojave.

• Localizations — OmniFocus is now localized in English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, and Spanish.
• macOS Mojave — Added a preference to automatically follow the system appearance to the Style Preference Pane.
• Sidebar — Added a light sidebar appearance. To use this appearance in the OmniFocus theme, uncheck “Always use dark sidebar” in OmniFocus Style Preferences.
• Forecast — Forecast now hides declined calendar events, and events in the past. Clean Up removes events that are still the Forecast outline but are now in the past due to passage of time.
• Columns — Fixed problems with the Columns layout and narrow windows.
• Copy/Paste — Fixed a problem where copying a parent task with child tasks selected would result in duplicate child tasks on paste.
• Crash — Fixed a crash in Quick Entry.
• Crash — Fixed a crash related to perspective settings.
• Crash — Fixed a sync-related crash.
• Dark Theme — General fixes to the dark theme.
• Help — Fixed a problem where the Help window presented in Full Screen when it shouldn’t have.
• High Sierra — Fixed a problem with the appearance of the View Options popover in Dark mode in High Sierra.
• Perspectives — Fixed a problem where a perspective would appear to be in a state with transient changes as soon as you clicked into a field.
• Perspectives — Fixed a problem where custom perspectives with certain filter rules would not update correctly when their contents changed.
• Perspectives — Fixed a problem where transient changes to a perspective would be saved on Quit and the perspective would never revert to its saved settings.
• Sidebar — Fixed problems with enabled states and appearances of the plus and gear buttons at the bottom of the sidebar.
• VoiceOver — Made several improvements to VoiceOver in OmniFocus.
• Smaller Fixes and Improvements — Including crash fixes.