Expected Behavior

Multiple databases can be connected/attached to the browser simultaneously for parallel usage.

Current Behavior

Existing connections get overwritten, practically preventing the simultaneous usage of multiple databases.

Steps to Reproduce (for bugs)

Assumption is that no database is connected at all.
Search in all opened databases for matching credentials is checked

1. Open database A and B in KeepassXC, tab of database b is active
2. Open Settings page of browser add-on and go to "connected databases"
3. Click "connect" and add key name "Key B" in pop up window
4. The new connection appears in the list
5. Change tab to database A in KeepassXC
6. Open Settings page of browser add-on and go to "connected databases"
7. Click "connect" and add key name "Key A" in pop up window
8. The new connection appears in the list
9. Close Settings window
10. Open Settings page of browser add-on and go to "connected databases"
11. Only the last database connection is listed and used by the add-on

Debug info

KeePassXC - 2.5.0
KeePassXC-Browser - 1.5.3
Operating system: Win/Linux
Browser: Chrome/Firefox/
Tested any combination with the same results

Please see also issues #318 #634 #3485 in keepassxc repo
They are closed but the described issue still exists.