So I think this task should be merged in {T4408}

I have been hit by that as well https://phabricator.wikimedia.org/T75716 In short you cannot delete columns but can only hide them see: D9719. Quoting myself:

That is confirmed to work on Wikimedia installation. Thank you very much!

That is a nice jump! I guess it represents D10762 about to land 8-)

You guys are pretty fast! Thank you.

@chad not sure if that matters but @erdoan change triggered a mail notification in all upper case.

In T6364#80346, @chad wrote:

Are they still grouped, but not labeled?

The group by works perfectly from the /manifests/ search page showing up the nice list of tasks as described above with my leet ascii arts.

Three columns might be nice on a wide screen, but please please keep in mind people using small windows. I usually browse with a 1000 x 800 px window so 2 columns is a maximum for me.

Thank you for the triaging and initial investigation!

I have enabled HTML emails notification on this Phabricator instance and my previous comment generated an email containing the following HTML (I have inserted a few new lines for clarity)

Thunderbird 31.2.0 (latest)

I would definitely have a use to display additional projects a card belong to (was T5356).