TYPO3 Core

I'm not sure if clicking outside a modal should trigger its closing action.
As you can see, all modals in the Maintenance module function this way.
Given that the Maintenance module is more important and has a higher impact on the website than modals in other non-admin modules, I think maintaining the current behavior might be better.
This approach prevents accidentally closing the modal by clicking outside of it. What do you think?

I would ignore "accidently clicking". Given you support it... where to start, where to end?

Lets focus on keyboard navigation. It would help, when new flash messages dont get focused automatically, eg the focus stay on the modal. What do you think?

I just checked the behaviour. It's actually not the flash message, which prevents closing using ESC key. The focus remains on the clicked button.

The issue is still valid for version 13

Test procedure

1) Admin tools > Manteinance > Card "Remove Temporary Assets"
2) Click on "scan temporary files..." > the modal window opens

(If you press the "Esc" button now the modal window closes)

3) Click on one buttons like "Delete x files in typo3temp/assets/css"
4) A flash message appear on the bottom right corner; it disappears after a short time

- If you press the esc button the modal window does not close
- If you click again somewhere inside the modal window and press esc, now it works (the window closes itself)

I digged and found that the issue occur for all "install" module modals that have buttons triggering an ajax request (that replaces the body content).

In that case, the modal loses the focus.

Is it a real problem ? In the actual state, it "prevents" closing the modal while the request is in process and before the content is returned and rendered.