I found a potential bug with Facebook's ad approval process. I could find that their calculation of text content in ads is at least 140% inaccurate in my case. According to the Facebook tool, my text content was 48%. However, I could just move the same text to different regions of the same ad and bring it down to under 20%. I am providing the details here so that the Facebook technical team can look into the details, clarify my doubts and confirm if this is actually an issue or if this is designed as is.