We have one project configured as multibranch pipeline project with branch filtered master and development. After few hours the master branch is disabled with a strikethrough symbol across its name and build option not available .
When clicked on "Scan Multibranch Pipeline", it enabled the branch and pipeline logs show "Branch ReOpened".
Initially we assumed it would be because of Option "Exclude branches included in pull request" but enabling "All branches" too is disabling the master branch time and time again.
Pipeline Logs are not providing any clear indication of whats happening causing it to disable .Please help .