Why my posts are pending for approval?

I have more than 500 posts and suddenly the usual new topic about packaging is not appeared in the topics list and I got a message that the post is pending for approval. Is this some kind of ban, or what happened? @SupportiveEntity, could you clarify this situation?
EDIT: surprisingly this post seems to appear immediately. Can such a thing happen because that post contained something suspicious?

Hey there @Etyuhibosecyu! Taking a look at your account, there’s no moderation hits on the account, so there shouldn’t be holds on posts that don’t contain links to sites that could be flagged. Do you have a specific post this is in reference to? I might be able to discern if you hit any filters, but your account is clear.

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