"Mass add contacts to group" omits contacts from list

Describe the bug

When I try to add contacts to a group (contacts -> contact groups -> select group -> add members) it omits most of my contact list (50 entries in total, omits probably half).

Steps to reproduce

1. Go to contacts
2. Click on groups (add one if you have none), then click on the three dots next to the group name, then on "add member"
3. Scroll down to the bottom of the list
4. See error: Contacts just stop showing
   
   
   

Expected behavior

Obviously, the contacts should be showing up when scrolling down.

Actual behavior

They dont show up.

Contact version

5.3.2

Operating system

Ubuntu 22.04.2 -> Docker Official Image

PHP engine version

Other

Web server

None

Database

MySQL

Additional info

PHP 8.2.8

I have no idea what webserver is running. I suppose it is apache but I haven't had to deal with it yet and I don't see that info in the admin section. Sorry.

Start by reproducing the contacts → contact groups → add member flow described in the issue and inspect the frontend code responsible for rendering and scrolling the member list. Verify that all contacts appear for a group with about 50 contacts, then add coverage or a fix that makes the complete list visible.