Problem with post translation and Version 1.5.12

Dear Alessandro,
There is a problemm when i try to translate a new post.
I set the default language italian.
When i click on the pencil to translate in other language (for example english) it seems that modify the italian and not the english.
I have to compile the italian field and italian tab and not the english title and english tab otherwise it not save anything
Thank you

https://www.ads-software.com/plugins/ceceppa-multilingua/