XF 2.1 Need Help Please.

[Catsmother]

I am so sorry to keep asking questions but I suppose we won't learn without asking.

Anyway I am making a theme and I don't know what I done, I am trying to make the Nav bar slimmer. I was messing about with the tabs and templates then this appeared, as you can see text which looks broken to me has appeared and i have no idea how to fix it?

 

[Paul B]

Check for customised components in the style and revert the changes starting from the latest one until the issue is resolved.

 

[Catsmother]

Check for customised components in the style and revert the changes starting from the latest one until the issue is resolved.

Just done that and it is still there.