In Nodes 2.0 the node showed its source picture twice: on its pad canvas,
and again underneath as ComfyUI's own copy of the node's images. The copy
took the node's spare height: a node 900 px tall gave the pad canvas
278 px, where the classic renderer gives it 512. With a picture wired in,
the copy showed the file named in Source, which the node was not using.
The node's own suppression removed the classic preview widget and blocked
node.imgs, but never set hideOutputImages, the flag Nodes 2.0 reads before
it draws a node's images under the widgets. It sets the flag now. The
classic renderer never reads it.
tests/core_preview.test.mjs scans every frontend file that stands the
classic preview down by hand and fails when one does not stand the
Nodes 2.0 copy down as well.
ausboss
e7c0047c5f