Can't post comments on other users' posts (button unresponsive

I'm having an issue where I can't post comments on other members' product posts — the "POST COMMENT" button doesn't respond when clicked (no loading state, no error message, nothing happens). I've tried logging out/back in and refreshing the page before commenting, but the issue persists.

Interestingly, I can post comments/replies on my own product's posts without any problem — it's specifically commenting on other people's posts that fails.

My username is andrei19922. A couple of posts where I've hit this:

https://www.indiehackers.com/product/clone-the-app?post=ZHE1ur4KagG9SzEU84zd
https://www.indiehackers.com/product/launch-nest-ln-12?post=pA9qnRRhpnvGJ1vCtfse

This has been happening for several days now, across different posts, on Chrome. Is there a restriction on my account, or is this a known bug?