Steps to reproduce

1. Install ibexa
2. Create action where event MVCEvents::CONFIG_SCOPE_CHANGE is triggered e.g. (ContentPreviewHelper->changeConfigScope()) then SiteAccessService->getCurrent() are called.

Result
Siteacces scope is not changed for SiteAccessService

Expected result
Siteacces scope is changed for SiteAccessService

Note
You can use this code: https://pastebin.com/7ADWnKaR
Paste it in src/Controller/TestController.php and then go to the route ../admin/test/