Updating a multi-line text field with Log edits checked with a pipeline, like username to be a system user.

I have created a pipeline realm using a system user (yes, I am a realm manager and can "switch users" in Pipelines). However, when I create a pipeline in this realm and have the pipeline update a mult-text field with log edits checked, some how the log edit feature still knows that it is me not the system user. Any fix for this?