If task list is longer than screen height (i.e. right scroll bar is visible in Task Tree window) then choosing New Task [...] or Edit Task Title effects in the following behaviour:
- Title field becomes input field as it should;
- now please do some scrolling with mouse wheel;
- Title field then doubles - input field stays in place, but its copy moves up or down;
Obviously input field should move up or down with all the tasks while scrolling without doubling effect.