Paul,
If I'm understanding your issue correctly, I ran into this before and contacted customer support. They confirmed it is a bug. If you open a support case and tell them which status you want removed, the developers can do it for you. Other than that, you have to delete the report and recreate it.
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Mike Tamoush
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Original Message:
Sent: 06-24-2020 18:18
From: Paul Easton
Subject: Unable to NOT select Kanban group
I have a fairly simple Kanban board report for tasks grouped by Status.
Under the "Show a group for" option, I've selected "only these" and a number of the status items.
When I first created the report I had mistakenly selected "not assigned", which I don't want because this is a report of items filtered on those assigned to me.
But even when I remove the "unassigned" and save or even after clearing all selections and selecting the columns I want, not including unassigned, unassigned is automatically populated.
What might be causing this behavior? Is there some other setting that would make a specific single-select field option required when used to group a Kanban board on?