text formatting (using html code) in metafield of products is not working anymore

Hello

I was using simple html code like text in order to format some words in the text of my metafields of my product.
it was working perfectly.
Now when I modify a product, html code is not saved in the table of the plugin “Bulky” and therefore formatting disapears.
For old products, not modified recently, formatting is still OK. For all products I have modified recently, formatting is KO.

Could you help to recover ability to format text of my metafileds ?

Thanks a lot

François