Confluence: Overall Requirements Coverage gadget does not show the saved filter

When editing a Overall Requirements Coverage gadget in Confluence, if the user has already saved any filter/Project, it will not be displayed. If a Project has been saved, the custom fields for the project will still be shown, but the Filter/Project option will be empty.

Pre-conditions:

• User has Xray add-on installed and configured in Jira.
• Confluence and Jira are correctly linked.
• Xray Overall Requirements Coverage gadget is available to use in Confluence (linked in the external gadgets).
• User is signed in to Confluence.

How to reproduce:

1. Open/Create a Confluence page
2. Open «insert content» drop-down
3. Select Other macros
4. Search for and select Overall Requirements Coverage gadget
5. Choose a Project
6. Save the gadget's configuration
7. Add it to page
8. Save Confluence page
9. Edit Confluence page
10. Edit gadget
11. Check the selected Project (none)

Actual result:
Every time the gadget is edited the chosen Project/Filter disappears from the selection.
The custom fields displayed are still from the selected project, so the information is still correct, but from a frontend perspective no project is selected.

Expected result:
All selected options should be visible when editing the gadget's configuration.

Version:
Xray 4.2.0

Browser:
All