Can anyone please help?

[gedsta]

I have made a change sometime over the last few days and for the life of me cannot remember what I have done to cause this issue.

I only noticed it about 10 minutes ago, so going back over the last few days is really out of the question to reverse it etc

Basically there is a slight gap (where the arrow is) and I just need to close it down so the blue bar around the threads is then unbroken.

Thanks for any help that is forthcoming.