We have experiencing a Re-execute promotion white page issue since version 2.19. The latest version still has the issue as well. We had to patch 2.19 ourselves, but it requires a lot of work to re-patch the latest plugin if we want to upgrade.
We use Active Directory for authenticating users to Jenkins. If we set up a promotion in a job, and grant an Active Directory group access as “Approvers", they can easily see the approve button. Clicking the approve button works fine. After the promotion, a re-execute promotion button appears. Clicking the button renders a white page, even if the user is logged in.
If we "Enable project-based security” on the job, and add the Active Directory group in there, with the “Promotion” box checked, the re-execute button works just fine. However, they then see a “Force Promotion” button next to each of the promotions, even ones they should not have access to.
If possible, please fix the re-execute promotion for promotions where the group or user is not part of the "Enable project-based security” listing?