I created a new product attribute ("Presentation") as a drop down menu, the two available values are "Aerosol" and "Pail". When I try to select one of these two attributes, I get the error message "Please use letters only (a-z or A-Z) in this field.

"Aerosol" and "Pail" comply with these rules, I also tried lower case, and there's no accidental space anywhere.

To me, this looks like a bug, but I might as well just be missing something. Would somebody know how to fix that?

Here's [how I set up the attributes][1].


And here's [the error message I get][2].

Thanks a lot for any help.

  [1]: https://i.sstatic.net/umzlI.png
  [2]: https://i.sstatic.net/GLMXe.png