Set default language as english on browser extension

When using this with my own LT server, I see that for some words like “communicasion”, this is interpreted as Italian and when changing the lang to English, it gives right suggestion “Communication” but this is not saved.
When you open this again, the language is again changed to Italian.
This happens only in 1 block part of the application, that we use.
Here is the screenshot:

Do you mean you re-open the page, or you just click again on the circle icon?

When I reopen the page. The Language defaults back to Italian.

Indeed, the setting is not stored per page.

Thanks dnaber, for the confirmation.