Fix bug with ScalaFX window sometimes being blank

[aishfenton]

Sometimes window renderer comes up with a blank window. Needs more work in general on lifecycle of window. Not sure if it's done right.

[skattoor]

I have this problem when, if I understand correctly, I attempt to plot too many series onto the same graph. For example temperatures over time for 100+ cities. Is it related ? Or am I doing it wrong ?

[aishfenton]

Might be related, not sure yet. Do you have some code that reproduces it?

[thimmy687]

maybe it is related to this issue,

My proxy is blocking some calls, so is for example in this file, https://github.com/vegas-viz/Vegas/blob/master/core/src/main/scala/vegas/render/StaticHTMLRenderer.scala

In line 35 "vg"not available.

maybe it is possible to add this resources as local file instead of load it everytime

see here line 24: https://github.com/vegas-viz/Vegas/blob/master/core/src/test/scala/vegas/util/WebGenerators.scala

and here: https://github.com/vegas-viz/Vegas/blob/master/core/src/main/scala/vegas/render/BaseHTMLRenderer.scala