I just checked it and it's showing "J" is the installation. I think when I installed the AV it hadn't had the chance to update to the newest. Old installer, I guess. In any case, the issue is still present.
Though I have noticed it that it occurs on any website where a text box. Most commonly, it happens on user forums - such as EA forums, Reddit & so on. It's not happening on this page, specifically. So I'm going to look into whether there is a script that is running on those page that shares common ground, it might be the issue. If so, I'll see if blocking the script assists with the issue.
In any event, I'll try to find a solution myself since I know when I contact support for most companies, I get the run-around, more often than not. I'll report my findings.