Channel issues on all clients

I have an Issue with some media-focused channels on my server. In those channels, people would post images and youtube links on them along with messages. But recently, no matter which client, people can't send messages alone on said channels. They would appear for not even a second and get deleted. Only the admin (including myself) can send messages per se on said channels. Checked the audit log, permissions and overrides, and everything seems normal. However, Members of the server have to send media ALONG with the message for it to go through. Every other channel works normally.