Classy textarea.html.twig has added classes as follows
set classes = [
'f...

Classy textarea.html.twig has added classes as follows

set classes = [
'form-textarea',
resizable ? 'resize-' ~ resizable,
required ? 'required',
]

so here it is adding 2 extra classes called 'resize-' ~ resizable and required.
So we need to add these classes in claro textarea.html.twig also?.

I have checked that resize-none, resize-vertical , resize-horizontal , resize-both classes are only used by stable theme only.