(Cloud) Field Mask error message cannot be changed.

In a cloud system, I have edited the "Error message of invalid input" for a field mask, but the error message displayed to the user is the original message, instead of the new edited message.

How can I display to users the new error message for this field mask without creating an entirely new field mask and replacing in all dialogs?

Thanks,
--Nate

EDIT: If it matters, the OrgID is in the new 5000000 range.

EDIT 2: After about 20 minutes, the new error message is now being displayed to the user.