Hello,
It looks like the resource unit is not persisted.
I use the demo here - https://blazor.syncfusion.com/demos/gantt-chart/editing?theme=bootstrap4
Steps to reproduce ->
1. Select a task.
2. Edit the task
3. Go to resource tab
4. Select resource and edit its unit, from 100 to 50, for example
5. Save the task
6. Reopen the task and its 100 again
Can you provide with some decision?
Have a good day.