Rubber roof trim.

[RichardH]

Dear All,
Has anyone else had a problem with a separating rubber roof trim on the leading edge of the lifting roof, as in the photo? I've only just noticed it and my heart sank - fearing that it was an early sign of corrosion. However although the rubber has lifted above and below this short section the paintwork itself appears unblemished right up to the front and on either side. I cannot see any sign of rot. Any suggestions on what best to do?
Cheers,
Richard