In case of multibranch pipelines which use Folders plugin and Folders plugin itself, job urls are not correctly reflect real action urls, so it is preferable to use absolute urls instead of short ones.
There is a PR that allows for the action urls to be generated correctly by means of using job absolute urls instead of short ones.
P.S. A few days ago
JENKINS-31202 has been resolved, but in case of multibranch pipelines action urls (for created by means of Dashboard plugin are not generated correctly when using job's short urls).
The PR mentioned above fixes action urls using absolute job url instead of short one.