Why does commenting <tap45> return with "Invalid parameters"?

so, i found this video on tiktok saying if you type <tap45> in the comments it will fail and say "invalid parameters" i tried it and it worked, any explanation?

Comments

eee44ggg-the-spammer3 months ago1

It works with <hello40> or anything with <'> because riktok doesn't understand the unicode characters

HappyThrasher993 months ago1

Putting anything inside arrow brackets will result in that