API endpoints return 404 error after update to 3.3.1

[tobiasge]

Hello,
I'm using the shlink:stable (also tried stable-roadrunner with the same effects) container image in Openshift. Since the update I have the problem that all API endpoints (except /rest/health) return a 404 error.

curl -H "X-Api-Key: ***REMOVED***"  https://example.com/rest/v3/tags/

{
  "title": "Not Found",
  "type": "https://shlink.io/api/error/not-found",
  "status": 404,
  "detail": "Cannot GET http://example.com/v3/tags/!"
}

This happens with or without the / at the end of the URL and for all API versions v1, v2 and v3. In the container logs I only see a 404 status:

INFO    http            http log        {"status": 404, "method": "GET", "URI": "/rest/v3/tags/", "remote_address": "10.129.6.1:48946", "read_bytes": 0, "write_bytes": 130, "start": "2022-10-06T07:48:54.498Z", "elapsed": "1.453693ms"}

I noticed the differences of the URLs. In my request and the error log are the correct URLs including /rest/ but in the returned JSON this part is missing.
The environment variables are set as follows: DEFAULT_DOMAIN = example.com, IS_HTTPS_ENABLED = true.

Any hints on where to search for the problem?