A bug in smartparens?

This is a repost for something I posted a while ago. I decided to post it again, since I asked this on discord, and someone that tried to help also found the same bug, but did not understand why that is.

When I write ' in org mode it automatically closes it with another '. But when I delete it (say I typed ' by mistake), then the automatically added ' remains. This is opposed to other similar signs like " and ( which their closing bracket is deleted automatically as well. Is there a way to fix it also for '? I tried to add (sp-local-pair 'org-mode "'" "'") but it did not fix the issue.

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