Do comments get removed on MDL without notification?

I'm quite sure I made a comment on here twice, which was spoiler-free https://mydramalist.com/685441-an-untitled-jtbc-project

But when I look at the page later, it was gone both times. There are comments there that give away more than whatever I wrote, but stay up.

It's quite rude to delete people's comments, that they spent time writing, without notification. It may just be a bug though.