Capital letter unwanted in movie review

After seeing a related movie, I went to my review of another movie and discovered that every time I mentioned H.E.R., the next letter was capitalized even though it had no reason to be. I tried replacing all the capital letters with lower case, and when I submitted, I was told my review had no changes so it would not be processed. In fact, those capital letters were back.

An example: H.E.R. Did a fantastic job. Should say H.E.R. did a fantastic job.