Alexa AWS timeout in combination with Cloudfllare tunnel or proxy

Hello together,

I have Alexa configured via AWS & have been using the Cloudflared addon for some time now. But since a few days (round about after updating to HA 2023.3 & Cloudflared 5.1.5) the AWS Calls to my HA instance time out 90% of the time.

When using Cloudflare DNS in proxy-mode I also get the timeout error. It seems like AWS & Cloudflare have some trouble working together currently.

The problem seems not be repeatable for everybody using the same setup, sine I found this post: https://community.simon42.com/t/probleme-mit-alexa-geraete-nur-teilweise-ansprechbar/20672

here also, an issue in the cloudflared: https://github.com/brenner-tobias/addon-cloudflared/issues/611

As a workaround, I now configured nginx & Cloudflare without proxy to get everything back up & running.