Microsoft Graph - Enable filtering for Planner Task requests

Sending a Graph request with a filter does not return a filtered result, for example:

https://graph.microsoft.com/v1.0/me/planner/tasks?$filter=percentComplete+lt+100

Will return all tasks rather than just incomplete ones. 

Related discussions across the web:

https://stackoverflow.com/questions/51268118/microsoft-graph-filtering-issue-with-planner-tasks

https://docs.microsoft.com/en-us/answers/questions/586446/list-plan-tasks-filter-query-produces-no-error-but.html