when viewing render from certain angles with tube rendering disabled, some lines don't show until the camera is moved

[L10nhunter]

steps to reproduce:

1. Make sure the the model has straight lines at multiple angles.

2. insure that tube rendering is disabled.

3. my settings for the WebGLPreview:
   { extrusionColor: '#7561A9; backgroundColor: 'black', buildVolume: { x: 250, y: 210, z: 220 }, travelColor: 'limegreen', lineWidth: 0.8, lineHeight: 0.4, extrusionWidth: 0.8, renderExtrusion: true, renderTravel: false, renderTubes: false, initialCameraPosition: [-200, 232, 200], }

4. once rendered, zoom in and watch lines appear and disappear.