V13.0.0 : A new version has just been released. It includes the following features and it fixes the bugs known at this time: 
Major Evolutions
Modern UI

• New Modern UI

- reduced contrast
- cleaner tables with no unnecessary borders

• Possibility to switch back to the Classic UI (default before version 13.0)
• Several Kanban improvements
• Removal of the legacy UI (prior to version 9.0)

Abacus Management

• Finalization of the feature set

Gantt View

• Global timeline on parent tasks
• Contracted planning: possibility to display sub-tasks on the parent line
• Possibility to display any Activity column in the Planning table
• Support for hatching in addition to activity colors
• Search by ID and name

Project Dashboard

• Display projects in a single row
• Project detail view