Inconsistent naming with multibranch pipelines

[FrigoCoder]

We have a multibranch pipeline Commons with master, test, release branches, and two supporting freeform jobs Commons-dev-to-test and Commons-test-to-prod.

When I include them into a categorized view with the regex Commons.* all of them show:

However when I try to group them with the regex (Commons).* the branches are not included:

When I use the more generic regex ^([A-Za-z]+).*$ the branches are categorized incorrectly:

The "Categorize by display name?" option has no effect whatsoever.

[firehist]

Up, is there any way to group them by job name?

[TwoStone]

We've the same problem. It seems that the regex is only evaluated on the last part of the jobs name (i. e. master) and not on the fullname. This is inconsistent with the regex you can enter to select the jobs for the view.