Login fails when the password is too complex

[update-freak]

Describe the bug

I created a docker container with the following docker compose

services:
podfetch:
image: samuel19982/podfetch:latest
container_name: PodFetch
user: 1026:100
ports:
- 4135:8000
volumes:
- /volume1/docker/podfetch/podcasts:/app/podcasts:rw
- /volume1/docker/podfetch/db:/app/db:rw
environment:
- POLLING_INTERVAL=300
- SERVER_URL=https://podfetch.beispiel.dynv6.net/
- DATABASE_URL=sqlite:///app/db/podcast.db
- BASIC_AUTH=true
- USERNAME=Felix
- PASSWORD=L#xmUgqw$Wi9&F@H
- GPODDER_INTEGRATION_ENABLED=true
restart: unless-stopped

When I try to login I got this message:

Then I found out that e.g. this password d34gtfcw4g2fv was ok.

Reproduction

Use as login-password L#xmUgqw$Wi9&F@H in the docker compose

System Info

Synology NAS DSM 7.2 with Docker

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• The provided reproduction is a minimal reproducible of the bug.