I have been happily pasting articles into my forum today with no issues.

Suddenly, this evening all new links that I enter, be they pasted or entered manually, have started to behave very strangely.

I can post a a full address link into my post, which will display correctly as an active full length link once submitted.

Below is an example link

https://webarchive.nationalarchives.gov.uk/20130402204913/http://archive.defra.gov.uk/rural/protected/commonland/tvg.htm

However as soon as I try to add a link text such as  -     Link available HERE

The link no longer displays correctly as shown in the attached image.

All other links posted earlier did display correctly and still do.

Any ideas on what could be causing this?

I have just tried to reset my permalinks but no change.