I have an extensive task list with a hierarchical structure of tasks. Some tasks have no priority, other tasks have highest/high/low/lowest priority.
In tasks module, when my filter is set to hide tasks with no priority, I get a nicely ordered list if i sort by priority (see 1. in screenshot)
The same list, when viewed in the sidebar of the calendar view, is ordered less convenient (see 2. in screenshot). It seems that in the sidebar, the order of tasks is dependent of the total hierarchical tree: currently unvisible tasks (set to no priority) impact the order of the visible tasks.
Please make the sidebar order tasks like in the task module.