On the article page, in the “Most read articles by the same author(s)” section, an unnecessary space is added after each article title.
In a special case, when this space is the last character in a line, the new line begins with a comma.
I checked that the article metadata has no spaces at the end of the titles.
I have already encountered such an extra space in other software. In that program, a space was added by a procedure that converted plain text into a link. Maybe in OJS it is also so?