I don’t have any custom filters set on Kali native installation but my tasks page is not limited to 10 items - seems the GB Docker containers are different. The solution is to create a custom filter_string and submit it with the get_tasks() function. Maybe the ignore_pagination field can be submitted with the filter_string, or else use the filter string rows=-1.
A quick tour through the community forum could produce some potential solutions.
For example: Max row per page