We have an "on prem" Azure DevOps Server 2020. For several of our branches, we have a branch policy requiring a "Build Validation" gated check-in build. We have a build definition with one build agent for this.
Our issue is that if someone submits a new Pull Request and another person has a Build Validation build going from another PR, the first build is automatically cancelled mid process and the new PR's build starts. This is very frustrating of course- and require some management of PR builds which should not be needed.
Does anyone know how to stop this behavior of a PR cancelling any in process builds?
Many thanks!