Getting null responses included on on task API search

Running the following get url:

https://app.asana.com/api/1.0/workspaces/WORKSPACE/tasks/search?opt_fields=assignee.name&resource_subtype=default_task&projects.any=PROJECT&due_on.after=2026-02-23&start_on.before=2026-02-23&sort_by=modified_at&sort_ascending=false

Specifically, we are looking for tasks that start today or earlier and end today or later. This worked for a long time but recently it started to return tasks that fulfill one of the due_on.after if the start_on is null (i.e. all one-day tasks into the future with this project now appear with this search)

Hoping this is either a quick bug or someone has an idea on how to route around this.

Welcome, @Miller_Safrit,

I didn’t look at your request closely, but I know a search bug was reported today, so I wanted to mention it in case it has something to do with your report too:

Thanks,

Larry