Created attachment 5894 Patch to use display_name When clicking one of the options from the action menu, the title of the following confirmation dialog isn't localized, and using the "display_name" fixes the problem.
Cannot test as I only have the gb locale installed, but this patch should be reviewed (and applied if need be) for 4.12. @Triagers: please test it!
Works fine here.
Will this patch be merged for 4.12?
Pushed right before 4.12!