I have been using Kirby in a docker container that was generated from a v3 release in early May of this year (don’t have confirmation of the precise version, but it was downloaded as part of building the docker container on May 4th). The site operates over HTTPS.
After re-generating the docker container today (with latest Kirby release) and running it, I am now getting mixed content errors as Kirby is inserting http rather than https URLs for linked items such as CSS/JS and page links.
Was there some change in the last few months to the way URLs are generated that might be causing this? A quick search through the release notes on GitHub didn’t highlight anything immediately.