Website rendering : portions of the tree may not be visible

[sheridancbio]

When expanding some subtrees (for example, expanding both MBN and MTNN (children of NHL)) the vertical extent of the viewport clips off a portion of the oncotree graph.
Expanding other nodes can compensate/recover from this error. There is likely some aspect ratio calculation or some tree depth limit assumption which no longer is valid.

Issue reported by @ersinciftci