is this a BUG or what?

[examplens]

I'm not sure if it's a bug or if I'm doing something wrong, although I'm pretty sure it's not on my side.
Namely, every time I leave a post in Tengri ANN, I get the error message "No subject was filled in". Of course, the subject is already filled in, it's just a reply.
And yes, this has happened to me several times, but only when I submit a reply to the Tengri ANN thread

[Jokers]

Sometimes this message appears when there is an emoji like 💠 or any else in the title or even in the quoted message itself. When I ignore this warning, the post passes correct anyway.