The solution was to bounce all production nodes for the above to be recognised and for the solution to work. It appears that the rule assembly cache does not update across nodes upon deployment and HFIX-56797, I believe, is intended to fix this sort of problem.
Has any one faced this problem and what was your solution. I would like to avoid the need for a server bounce ideally.
Can I apply this hotfix on its own via the hotfix manager, or are there prerequisites?
Is there any regression testing that needs to be done?
@MarcLasserre_GCS Thanks Marc. Environment support have reported that the system pulse is working normally. Upgrade to 8.5 is also planned but may take a few months to happen. The hotfix in this case seems a reasonable step to take.