Based on emails we have recieved from you all, we were able to figure out that issue was either not reproducible or that the feature was not being used correctly.
Closing this issue was for now. Let us know in case you encounter the issue again
An error occurred while saving the commentTom Liszka commented
I've encountered the same thing... My dictionary defaults to Spanish even though I have selected English in both the Character box and in Preferences>Dictionary>Language>English: USA.
It's been driving me bonkers, but I found a temporary solution. Select the "Selection" tool and make sure nothing is highlighted/selected in your document. Then hit "COMMAND + A" (Mac User), THEN go to Type>Character and change the Language to English: USA or your desired language.