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Test posting... (oh sorry I thought I could delete it..)
계란말이
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test mention/reply
@새우튀김 멘션?
And I realized no notification for Non-English username?
That's what addons are made for! Try Mentions+ which will bring you the possibility to mention any character combination you wish
youtube test
I may not provide the completed solution you might desire, but I do try to provide honest suggestions to help you solve your issue.