Pre-requisite: Have access to Subscription packages - it seems Forma is one, more details in comments.

Steps to reproduce:

1. Open any project.
2. Window > Package Manager > Unity Registry
3. Filters > Check "Update Available"
4. Click to a different category i.e. In Project
5. Click back to Unity Registry.
6. Click Filters to view the dropdown.

Actual results: Only the selected filter is shown.

Expected results: Both filter options are shown and can be switch between.

Reproducible with versions: 6000.0.16f1, 2022.3.42f1, 2022.1.0b8

Not Reproducible with versions: 2022.1.0b7

Can't test with versions:

• 2022.1.0a1, 2021.3.42f1 - no filters available.

Tested on (OS): MacOS Intel 12.7.4

Notes:

• If you deselect the filter it remains only one option until you re-open the filter dropdown.
• This does not seem to happen if you select "Subscription based" instead.
• See how the filter "Update available" behaves when the last item is updated