The topic hierarchy is lost inside the Question Details section after choosing a different product

[emilghittasv]

Preconditions
Sign in to SUMO with an account that has the necessary permissions of editing the Question Details.

Steps to reproduce
Steps to reproduce the behavior:

1. Go to a posted AAQ question (example: https://support.allizom.org/en-US/questions/1476810)
2. Click on the "Question Details" section.
3. Click on the "Edit details" section.
4. Click on the "Topic" dropdown and observer the hierarchy.
5. From the "Product" dropdown select a different product.
6. Click on the "Topic" dropdown again and observe the hierarchy.

Expected behavior
The hierarchy is kept.

Actual behavior
The hierarchy is lost after choosing a different product.

Screencasts

Desktop:

• OS: Windows 11
• Browser: Firefox

Additional context
This issue is reproducible in stage.

[smithellis]

mozilla/kitsune#6624

[emilghittasv]

I can confirm that this issue is verified fixed in stage.

I'm moving this ticket inside the release column.