Graph doesn't update until mass translates

[phet-steele]

@jonathanolson pretty self explanatory. Pause the sim with the energy graph open. Move some variables around and the energy bars won't update until the mass moves (press play or drag it). Note this is entirely possible without pausing the sim by means of multitouch (holding the mass in place with one finger, changing things with another).

Tested on Win 10 Chrome and iPad Air 2 (Leibniz). For phetsims/tasks/issues/498.

Troubleshooting information: Name: ‪Pendulum Lab‬ URL: http://www.colorado.edu/physics/phet/dev/html/pendulum-lab/1.0.0-dev.8/pendulum-lab_en.html Version: 1.0.0-dev.8 2016-02-03 23:48:40 UTC User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.103 Safari/537.36 Language: en-US Window: 1600x775 Pixel Ratio: 1/1 WebGL: WebGL 1.0 (OpenGL ES 2.0 Chromium) GLSL: WebGL GLSL ES 1.0 (OpenGL ES GLSL ES 1.0 Chromium) Vendor: WebKit (WebKit WebGL) Vertex: attribs: 16 varying: 30 uniform: 1024 Texture: size: 16384 imageUnits: 16 (vertex: 16, combined: 32) Max viewport: 16384x16384 OES_texture_float: true Dependencies JSON: {"assert":{"sha":"d4909677","branch":"master"},"axon":{"sha":"3a5c7fb6","branch":"master"},"babel":{"sha":"cb55342f","branch":"master"},"brand":{"sha":"8c6f9c04","branch":"master"},"chipper":{"sha":"38916c91","branch":"master"},"dot":{"sha":"ddf82014","branch":"master"},"joist":{"sha":"4c228a32","branch":"master"},"kite":{"sha":"4a947119","branch":"master"},"pendulum-lab":{"sha":"07b907c0","branch":"master"},"phet-core":{"sha":"874a703d","branch":"master"},"phetcommon":{"sha":"3db92af3","branch":"master"},"scenery":{"sha":"d0753b38","branch":"master"},"scenery-phet":{"sha":"f02afc1a","branch":"master"},"sherpa":{"sha":"bf82eb95","branch":"master"},"sun":{"sha":"36a0486f","branch":"master"},"tandem":{"sha":"bfd87e0e","branch":"master"}}

[memo330179]

Assigning to @veillette for review.

[veillette]

Assigning to @phet-steele

[phet-steele]

Looks fixed to me.