Hidden neighbor bug on load

[ugurdogrusoz]

When you upload the attached model, and expand collapsed compound C, it should be the child node A with hidden neighbors not C. new_file.sbgnml.txt

[kinimesi]

@ugurdogrusoz This is not related to saving/loading hidden neighbor. When C is collapsed, it is connected to B with meta-edges. If you hide B, the border of C gets thick (not A). Before you save it, it is node C which has hidden neighbor in its data field. Save/load works as expected.

[ugurdogrusoz]

Looks like the result depends on the order of operations. Changing the node with hidden neighbors is required on collapse, which is tricky. Let's leave it for later.