When using the two-column layout, invalid field styling is a bit broken.
Which column classes does that field use? .group or .columns?
.group. Is that deprecated?
Yes. The new classes are two columns for the div and column for the labels.
D'oh I haven't been changing these in any extension.
Could you add this to the migration guide please. Is it documented anywhere else?
Oh I see we already have #1016 requesting these are documented.