Thank you for the report. I created JIRA report UE-13384 for the issue where the widgets are different in the blueprint viewport vs when placed in the level. Our developers will be investigating the issue further and we will post here with updates as we have them.
I also entered a Feature Request for the ability to translate the widgets inside of the blueprint instead of having to set them manually.
This is still present in 4.14, I have an array of FVectors in my component and cannot see any editor widgets for them in the blueprint viewport. Has any progress been made on this since 2015?