Finding users while trying to mention doesn't work

[kubaWilk]

Describe the bug
Trying to mention somebody in comment or jira issue doesn't work - it does not find any users. When I edit comments or issue description via VSCode extension i can see that mentions are done as "[accountid:UUID]" which are later transcribed element to an account full name as an anchor element (directing to browser with a given user's details page in a project). Issue can be seen in Jira Software project in a managed environment.

To Reproduce
Steps to reproduce the behavior:

1. Open Visual Code
2. Open any Jira issue using the extension
3. While adding a comment/editing description click on "@" button to mention somebody
4. A dropdown list shows up that's supposed to show search result. You can see it shows only "No options" as a placeholder in the background
5. Type in user's Full Name/Surname/e-mail associated with the account you are looking for
6. No matches show up.

Expected behavior
Seeing users I can mention while typing in their name/e-mail address

Screenshots
If applicable, add screenshots to help explain your problem.

No results show right after clicking a "@" button "Jakub" is a pretty popular polish name which should show many results yet there's none. Same situation as the first screenshot however in comment section. Same situation as the second screenshot however in comment section.

Environment and Version (please complete the following information):

• Atlassian Plugin Version (4.0.9)
• Visual Studio Code Version (1.106.2)
• Local installation of VSCode and the plugin
• Windows 11 24H2 (26100.7171)