Edit Snippet for MetaData

Hi there,

Its not so much a problem I’m having, just something I have noticed and I’m worried about. When I ‘Edit Snippet’ for the metadata description, I can now write 4 lines of text where as before I could only do just under 2. I noticed this about 2 weeks ago, and posted my question on another site but didn’t get an answer.

Is something wrong on my end? Is my site malfunctioning?

Many thanks
Natalie