Zoom in and labels are no longer attached to nodes

[utensil]

Just use http://htmlpreview.github.io/?https://github.com/wehriam/cytoscape-css-renderer/blob/master/demo.html and zoom in to the extent that some nodes are out of the viewport, the labels of the out-of-screen nodes are no longer attached to their corresponding nodes.

Before zooming in:

After zooming in:

[AjitPS]

@wehriam I've encountered this as well. The html labels appear out of position when nodes are dragged around.

Also, if a node is hidden, the labels remain visible which is quite strange.