Zeiss 21mm f2.8 User Poll: Color Cast?

I am talking to Zeiss about the cyan/blue corner cast issue with this lens on a FF body, in hopes that they will come up with a software filter that removes the cast.

I'm talking with their USA National Sales Manager:

Richard Schleuning - National Sales Manager, International Sales Americas
PO Box 112, Roseland, NJ 07068 USA
Phone/Fax: 973.226.7387 - Mobile: 973.809.3896 - rschleuning@zeiss.com

He has been very helpful in the past, but says he's never received a complaint about this problem until now.

So, do you view this as a significant problem? That's my question.