This link was created in response to a student writing
issues that teachers come across
‘Come across’ here seemed a bit informal. One potentially useful link is https://ske.li/issues_ariseconc and looks like this:
One could argue that this isn’t exactly the same meaning as the original issue – if you want to keep the idea that a person / entity has a problem/issue, then this link might be preferable https://ske.li/problem_faced. It looks like this:
It’s actually more common to find a ‘reduced relative’ clause in this sort of situation. Examples are shown at this link https://ske.li/issues_faced, which looks like this: