Signature tags showing on final PDF

I have an Automate workflow with a generate PDF outcome followed by a request signature outcome. On my docgen template I have the signature tag [[s|1|r:0     ]] and it is in white text color to hide it from showing under the actual signature that is applied to the final PDF. Unfortunately, the tag is also showing when the PDF is converted to text. Anyone know why the signature tag is not being replaced by the signature itself?