How can I display the number of tasks in each lane next to the lane title (e.g., "To Do (3)")?
Support Forum
We do show the number of tasks in the column as well as for the swimlanes. Checkout these demos:
https://bryntum.com/products/taskboard/examples/swimlanes/
https://bryntum.com/products/taskboard/examples/basic/
Isn't it what you want?