GitHub and GitLab "Personal Access Token" is periodically cleared while Unity Hub is running on Linux

Steps to reproduce:

1. Open Unity Hub on Ubuntu
2. Go to Settings > Security & Privacy
3. Input "Personal Access Token" for GitHub or GitLab
4. Click Authorize
5. Leave the Hub running for around 15 minutes
6. Observe the entered "Personal Access Token"

Actual results: The Personal Access Token is cleared/lost, and the user is no longer authorized. No error or warning is shown in the UI

Expected results: The Personal Access Token should persist until the user explicitly removes it or the token expires

Reproducible with versions: 3.17.2

Tested on (OS): Ubuntu 24.04

Notes:

• It seems the token resets every 15-20 minutes, sometimes sooner. 

  {"timestamp":"2026-04-20T15:17:57.714Z", ... "message":"Credential retrieved for provider: github (github.com)"}
  {"timestamp":"2026-04-20T15:22:22.569Z", ... "message":"No credential found for provider: github (github.com)"}
  

• Colleague mentioned they were also able to observe this on macOS, but it doesn't seem to happen as often there so might be connected to something else. For now this only appears to affect Ubuntu
• libsecret-1.so.0 is present on the test machine and gnome-keyring-daemon is confirmed active. Installing libsecret-tools manually did not resolve the issue
• Additionally, the "Clear personal access tokens from the OS Keychain on logout" settings is also unchecked