2024.6.0 Regression: LDAP Providers not listed in Providers list for applications

[Salvoxia]

Describe the bug
As of Authentik version 2024.6.0 (tested using Docker) it is no longer possible to select LDAP providers when assigning a provider to an application.
This behavior was introduced with the update from 2024.4.3 to 2024.6.0. I did not find any obvious entries in the release notes for 2024.06.0-rc1, 2024.06.0-rc2 or 2024.06.0 indicating changed behavior with regards to LDAP providers, so I assume this to be a bug.

To Reproduce
Steps to reproduce the behavior:

1. Create an LDAP Provider
2. Create a new application
3. Open the Provider selection dropdown menu
4. The LDAP provider created in step 1 is not listed

Expected behavior
All available LDAP providers should be listed in the Providers dropdown menu.

Screenshots
2024.6.0

2024.4.3

Version and Deployment (please complete the following information):

• authentik version: 2024.6.0
• Deployment: Tested with docker-compose and helm

[romines-dev]

Can confirm this issue on my fresh 2024.6.0 deployment with docker-compose.
Guess I'll backdate my deployment to 2024.4.0 for now.

Edit: Also can confirm backdating to 2024.4.0 allows LDAP to be selected as a provider again.

[mpaluch92]

Saw this as well yesterday. However, I could set LDAP as a provider in the Backchannel Providers list below.

[BeryJu]

While this isn't directly intended, the reason why this behaviour is changed is that in the provider list we only show providers now that aren't marked as "backchannel" providers, which excludes LDAP, SCIM, RADIUS, gws and entra

For some of those providers this is on purpose as they are intended to be backchannel only (SCIM, gws and entra for example), but this is very much conflicting with the provider choices you get in the application wizard

(For reference 2edc651)