Trouble with Recommender information on Common App??

Hello, I recently listed one of my teacher recommenders under the wrong subject. They informed me that when submitting their recommendation, they clicked the gear icon and changed the subject to the correct one BEFORE submitting it. However for some reason the change wasn’t reflected on my common app and there is nothing I can do now because the teacher has already submitted the form. I choose this teacher because their class is the subject that I want to major in and have a passion for. I contacted Common App but they weren’t really helpful. What should I do?? Should I call and inform colleges in advance of the mistake is or is there something else I can do to fix this?

An additional thing, the trash icon is still next to the name of the recommender even though it is submitted. It says “delete assignment.” Would this help? I’m scared that clicking it will screw up my app.

I can’t see it as being a big deal. The adcom will read the letter and probably not even realize the error. Or, if he/she does, it won’t even be a blip on the radar.