Choosing user(s) close dialog and do nothing

[tapioca-design]

On c5.8, did I miss something ?
I install well the package MultiUserSelectorAttribute,
I put the multi_user_selector folder into Application/attributes/
But when I edit attributes of a page, I choose this multi_user_selector, I can see well the dialog with all users, I select a few of them, select "Choose" but then the page's edition dialog closes, and when I reopen it, no user selected, with no js error in the console.
It doesn't seem to work, did I miss something ?
Merci ! Sylvain.

[a3020]

It's a package, so you should copy the 'multi_user_selector_attribute' folder to the packages folder.

[tapioca-design]

OK thanks, it does not work if you go to sitemap > page > attribute but works if you edit the page with composer. (The ⚙ button when you see a page).

Using pagination unselect all checkboxes of previous page, so it looks unusable. If you choose many users, then they are all listed, but if you want to re-edit and click on the "+", then all users are unchecked.

Maybe you can patch it, your attribute saved my life !
Thanks !!!

[a3020]

Seems like the same issue as in #2.