Link to issue number:

Fixes #15411

Summary of the issue:

When unchecking 'Include incompatible add-ons', incompatible add-ons are still included in the list.
This is due to the cache of the compatible add-ons being updated to include incompatible add-ons.
This is due to a referencing problem, where the listed add-ons and the compatible add-on cache used the same reference.

Description of user facing changes

Unchecking "include incompatible add-ons" should now correctly return the list to only show compatible add-ons

Description of development approach

A copy of the cache should be used instead, to prevent external functions from updating the cached copy.

Testing strategy:

Manually test STR in #15411

Known issues with pull request:

None

Change log entries:

refer to diff

Code Review Checklist:

• Pull Request description:
  • description is up to date
  • change log entries
• Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• API is compatible with existing add-ons.
• Documentation:
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English
• Security precautions taken.