`Date Locale` are not saved after being deauthenticated automatically

<!-- Official documentation - https://traggo.net/ --> **Have you read the documentation?** - [x] Yes, but it does not include related information regarding my question. **You are setting up traggo in** - [x] Docker - ~[ ] Linux native platform~ - ~[ ] Windows native platform~ **Describe your problem** I don't want to open an issue for a bug for no reason. So here are the question. Get authenticate (without checking `Remeber Me box`) and go to `User / Settings` and change default locale to `German`. Web page asks to reload the page to apply this change, I do. I go back to `Timesheet / List`. After a while, I end up unauthenticated, and when i re-authenticate again, the `DateLocale` is back on `American`. Is that supposed to be the expected behavior ? Is the configuration not supposed to be saved at some point (cookie or else) ? **Any errors, logs, or other information that might help us identify your problem** `docker-compose.yml`: ``` version: "3.7" services: traggo: image: traggo/server:latest ports: - 3030:3030 environment: TRAGGO_DEFAULT_USER_NAME: REDACTED TRAGGO_DEFAULT_USER_PASS: REDACTED volumes: - ./traggodata:/opt/traggo/data ```