Another bug, strange term "X"

On my LingQ main page, the most important terms to be learned are displayed:

One item is strange: “X”. It does not exist. If I click on it, it will not show up. I am unable to remove it, either.

see Vocab page V-Z:

It would be nice to fix this in the future…

Very strange, hape. We’ll look into it.

This should now be fixed. Please let us know if you continue to experience problems!