It's not a bug, it's the result of an ungoing purge on the platform for the same reasons as the Steam purge (visa/mastercard banning payment for nsfw content and strongly enforcing it upon Steam and itch.io as we speak, because of right wing extremist group pushing for it). First nsfw, next anything LGBTQ+, or labelled as "woke" or "DEI". The game industry and the indie game dev scene is dying.
The fact both Steam and itch don't even try to fight it, don't even make a proper announcement and seem so eager to jump directly to full Tumblr purge mode is making beyond sad and disappointed.