WebHook push not triggered on update via repository mirroring
I'm using the WebHook Push trigger to notify myself when then the project is updated via repository mirroring. However, for a few days, I'm experiencing that those WebHooks are not executed anymore. They do work when I use the test button, but they don't work when I push something or when the repository is updated via mirroring.
Steps to reproduce
Happened on existing projects. Not sure whether it is reproducible
When a new commit is pushed to the build branch a new pipeline is triggered (and skipped as it says [ci skip] in the commit message). However, a second build should be triggered via WebHook Push which then builds the package.
This project may be used for testing. There is nothing in it which cannot be recreated in seconds.
What is the current bug behavior?
The WebHook Push is not executed. Neither on push nor when the project is updated via mirroring
What is the expected correct behavior?
The WebHook Push should be executed when either a new commit is pushed nor when the project is updated via mirroring
Output of checks
This bug happens on GitLab.com (example project is on GitLab.com)