Hello @groogiam
Running two agents on the same machine is a scenario we do not support. It also is a configuration that is discourage by Microsoft:
Although multiple agents can be installed per machine, we strongly suggest to only install one agent per machine. Installing two or more agents might adversely affect performance and the result of your pipelines.
You can find more details about why multiple agents are causing problems here Multi job Azure DevOps Pipeline - #3 by mickaelcaro.