In-Context Discussion Sidebar fails to filter by Unit ID

[YannickPezeu]

Description

When I am on a tutor unit (a video for instance), I have the option to open the discussion in the sidebar.
In this sidebar, I want to see the discussions related to the unit (i.e. the topic) I am on.
Instead, I see all the discussions of the entire course
And I can't filter to get only the discussions related to the topic I am on

Environment

• Platform: Tutor (Sumac/Redwood release)
• Application: frontend-app-discussions
• Browser: Chrome

Configuration

1. Studio > Content > Pages & Resources > Discussion:
   • "Group in context discussion at the subsection level" is UNCHECKED (Disabled).
2. Unit Settings:
   • "Enable discussion" is CHECKED.

Steps to Reproduce

1. Create two different Units
2. Ensure "Group in context discussion at the subsection level" is disabled for the course.
3. Enable discussion on both units.
4. Post a comment in "Unit A".
5. Navigate to "Unit B".
6. Open the Discussion Sidebar on Unit B.

Expected Behavior

The Sidebar for Unit B should be empty ("No posts") or only show posts specifically linked to Unit B.

Actual Behavior

The Sidebar for Unit B displays the posts from Unit A.
In my specific case, the sidebar displays posts from completely different sections of the course.

Evidence (See attached screenshots)

1. Discussion Tab (Correct):

The main discussion tab correctly shows that the topic "L'aiuola" has 0 posts.
2. In-Context Sidebar (Incorrect):

When viewing the unit "L'aiuola", the sidebar displays multiple posts that actually belong to other topics (like "L'odinola" or "Introduction").
3. Missing Filters:

The sidebar filter menu does not offer a "Current Unit Only" option, making it impossible for learners to segregate the conversation.

Severity

High. This prevents the creation of structured courses where discussions must be isolated per video/module.