Image description issue after PW upgrade

[lenoir]

Hi,

I'm using the image description field on a multi-language website. I've updated recently to PW 2.5.3 and now the image description is written as an array instead of a string in the database. 

The issue i have is that a lot of images have a description of the kind: "description", and the new ones look something like this: {"0":null,"1052":"description"}

Is there a way of going back to the old way? I mean, to get a string? 

How do I get the description in an array? 

Has anyone had the issue before?

Thanks for your help.