Entrypoint redirections not working with defaultRuleSyntax=v2 in v3.0.0

[HalloTschuess]

Welcome!

• Yes, I've searched similar issues on GitHub and didn't find any.
• Yes, I've searched similar issues on the Traefik community forum and didn't find any.

What did you do?

I upgraded to v3 by following the migration guide. For easy migration I changed the default rule syntax to v2.

What did you see instead?

After upgrading I noticed that redirections from HTTP to HTTPS no longer work.

What version of Traefik are you using?

Version: 3.0.0
Codename: beaufort
Go version: go1.22.2
Built: 2024-04-29T14:25:59Z
OS/Arch: linux/amd64

What is your environment & configuration?

This is a simple example config:

core:
  defaultRuleSyntax: v2

entryPoints:
  web:
    address: :8080
    http:
      redirections:
        entryPoint:
          to: websecure
          scheme: http

  websecure:
    address: :8443

When opening http://localhost:8080 with this config, there is no redirect to http://localhost:8443:

$ curl http://localhost:8080 -vvvv
*   Trying 127.0.0.1:8080...
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET / HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.81.0
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 404 Not Found
< Content-Type: text/plain; charset=utf-8
< X-Content-Type-Options: nosniff
< Date: Sat, 04 May 2024 05:24:53 GMT
< Content-Length: 19
< 
404 page not found
* Connection #0 to host localhost left intact

Without core.defaultRuleSyntax it works as expected:

$ curl http://localhost:8080 -vvvv
*   Trying 127.0.0.1:8080...
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET / HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.81.0
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 301 Moved Permanently
< Location: http://localhost:8443/
< Date: Sat, 04 May 2024 05:25:40 GMT
< Content-Length: 17
< 
* Connection #0 to host localhost left intact
Moved Permanently

If applicable, please paste the log output in DEBUG level

WRN pkg/config/static/static_config.go:347 > v2 rules syntax is now deprecated, please use v3 instead...
INF cmd/traefik/traefik.go:100 > Traefik version dev built on I don't remember exactly version=dev
DBG cmd/traefik/traefik.go:107 > Static configuration loaded [json] staticConfiguration={"core":{"defaultRuleSyntax":"v2"},"entryPoints":{"web":{"address":":8080","forwardedHeaders":{},"http":{"redirections":{"entryPoint":{"permanent":true,"priority":9223372036854775806,"scheme":"http","to":"websecure"}}},"http2":{"maxConcurrentStreams":250},"transport":{"lifeCycle":{"graceTimeOut":"10s"},"respondingTimeouts":{"idleTimeout":"3m0s","readTimeout":"1m0s"}},"udp":{"timeout":"3s"}},"websecure":{"address":":8443","forwardedHeaders":{},"http":{},"http2":{"maxConcurrentStreams":250},"transport":{"lifeCycle":{"graceTimeOut":"10s"},"respondingTimeouts":{"idleTimeout":"3m0s","readTimeout":"1m0s"}},"udp":{"timeout":"3s"}}},"global":{"checkNewVersion":true},"log":{"format":"common","level":"DEBUG"},"providers":{"providersThrottleDuration":"2s"},"serversTransport":{"maxIdleConnsPerHost":200},"tcpServersTransport":{"dialKeepAlive":"15s","dialTimeout":"30s"}}
INF cmd/traefik/traefik.go:605 > 
Stats collection is disabled.
Help us improve Traefik by turning this feature on :)
More details on: https://doc.traefik.io/traefik/contributing/data-collection/

INF pkg/server/configurationwatcher.go:73 > Starting provider aggregator aggregator.ProviderAggregator
DBG pkg/server/server_entrypoint_tcp.go:220 > Starting TCP Server entryPointName=web
DBG pkg/server/server_entrypoint_tcp.go:220 > Starting TCP Server entryPointName=websecure
INF pkg/provider/aggregator/aggregator.go:202 > Starting provider *traefik.Provider
INF pkg/provider/aggregator/aggregator.go:202 > Starting provider *acme.ChallengeTLSALPN
DBG pkg/provider/aggregator/aggregator.go:203 > *traefik.Provider provider configuration config={}
DBG pkg/provider/aggregator/aggregator.go:203 > *acme.ChallengeTLSALPN provider configuration config={}
DBG pkg/server/configurationwatcher.go:227 > Configuration received config={"http":{"middlewares":{"redirect-web-to-websecure":{"redirectScheme":{"permanent":true,"port":"8443","scheme":"http"}}},"models":{"web":{},"websecure":{}},"routers":{"web-to-websecure":{"entryPoints":["web"],"middlewares":["redirect-web-to-websecure"],"priority":9223372036854775806,"rule":"HostRegexp(`^.+$`)","service":"noop@internal"}},"serversTransports":{"default":{"maxIdleConnsPerHost":200}},"services":{"noop":{}}},"tcp":{"serversTransports":{"default":{"dialKeepAlive":"15s","dialTimeout":"30s"}}},"tls":{},"udp":{}} providerName=internal
DBG pkg/tls/tlsmanager.go:321 > No default certificate, fallback to the internal generated certificate tlsStoreName=default
DBG pkg/middlewares/redirect/redirect_scheme.go:29 > Creating middleware entryPointName=web middlewareName=redirect-web-to-websecure@internal middlewareType=RedirectScheme routerName=web-to-websecure@internal
DBG pkg/middlewares/redirect/redirect_scheme.go:30 > Setting up redirection to http 8443 entryPointName=web middlewareName=redirect-web-to-websecure@internal middlewareType=RedirectScheme routerName=web-to-websecure@internal
DBG pkg/middlewares/recovery/recovery.go:22 > Creating middleware entryPointName=web middlewareName=traefik-internal

[traefiker]

Closed by #10689.