I cannot Rearrange List

I have a serious issue today when rearraging items on Babe World then Ren item unexpectedly appears when I reached 500 maximum I tried to remove it when I rearraging correctly it constantly reappeared the same thing happen to National Unity of Babes a year ago, johanlefourbe was right the Listal site had experiencing technical difficulties and bugging issue so can you resolve this issue?

In my case, even if one of my lists was 'broken' or 'defect' and I didn't want to wait for them to fix it, I would just recreate the list from scratch.

Otherwise, you have to wait for Tom to fix this since I doubt the moderators have enough rights to fix such an issue but I might be wrong on this