Yes that happened to me too I had Monday savior and I didn't even read a single chapter of it because of the and and other things as well and also others are saying that regarding our lists nothing will return unless it's either rated or taged and this is how it is with me and some other accs I checked as well
It has caused everyone stress and anxiety, so you are not the only one feeling this way. I lost half of my list and see tags on the side that I don't have in my list but exist within that tag which I cannot delete. It is frustrating but give them time. This week I decided to clean my list and wish I could wipe out the tag collections altogether so doing other stuff like slowly adding my collection again has kept me busy.

I don't wanna sound whiny but I'm genuinely getting a little anxious abt my reading lists n stuff and also have u guys also had random ass stuff put in there? yall for some reason mine had placebo and trust me I wouldn't touch that manhwa with a 10m pole I'm crying