English,Spanish template alerts triggered to users instead of the one in their preferred langeuage?

Summary:

Why are we getting both the English template and the Spanish template alerts triggered to all users in the alert for the Learning Required assignment instead of the one in their preferred language?

Content (please ensure you mask any confidential information):

Why are we getting both the English template and the Spanish template alerts triggered to all users in the alert for the Learning Required assignment instead of the one in their preferred language?

Version (include the version you are using, if applicable):

Why are we getting both the English template and the Spanish template alerts triggered to all users in the alert for the Learning Required assignment instead of the one in their preferred language?