Cartodb: Tangram error on dataset preview

[juanignaciosl]

Steps to Reproduce

1. Enable vector_vs_raster feature flag.
2. Import a dataset dropping it at datasets page.
3. Click "preview".

Current Result

Error:

MAP RENDER MODE Object {mode: "vector", reason: "webgl=yes,cartocss=supported,valid-estimated-features=2"}mode: "vector"reason: "webgl=yes,cartocss=supported,valid-estimated-features=2"__proto__: Object
tracker.js:15 Error creating an instance of layer view for 'layergroup' layer -> Tangram is not defined
a.(anonymous function) @ tracker.js:15
error @ log.js:27
f.createLayerView @ leaflet-layer-view-factory.js:88
_createLayerView @ map-view.js:249
_addGroupedLayer @ map-view.js:222
_addLayer @ map-view.js:199
(anonymous) @ leaflet-map-view.js:125
v.each.v.forEach @ underscore.js:153
(anonymous) @ backbone.js:87
_addLayers @ leaflet-map-view.js:122
render @ map-view.js:118
_renderMapView @ vis-view.js:55
render @ vis-view.js:28
(anonymous) @ backbone.js:328
(anonymous) @ underscore.js:890
f @ backbone.js:368
y @ backbone.js:356
d @ backbone.js:155
u.trigger @ backbone.js:346
(anonymous) @ vis.js:351
(anonymous) @ map-base.js:103
success @ client.js:56
u @ jquery.js:3099
fireWith @ jquery.js:3211
n @ jquery.js:8264
n @ jquery.js:8694
dispatch @ jquery.js:4435
I.handle @ jquery.js:4121
F @ tracker.js:5
tracker.js:38 Uncaught Error: TrackJS Caught: Tangram is not defined
    at i (tangram.js:6)
    at c (leaflet-cartodb-webgl-layer-group-view.js:17)
    at new I (leaflet-layer-view-factory.js:20)
    at f.createLayerView (leaflet-layer-view-factory.js:86)
    at S.i._createLayerView (map-view.js:249)
    at S.i._addGroupedLayer (map-view.js:222)
    at S.i._addLayer (map-view.js:199)
    at leaflet-map-view.js:125
    at Function.v.each.v.forEach (underscore.js:153)
    at S.i.each (backbone.js:87)
wrapError @ tracker.js:38
F @ tracker.js:5

cc @xavijam (although it might fixable by backend, adding tamgram at dataset page).

[noguerol]

Duped, right?: https://github.com/CartoDB/cartodb/issues/12513

[xavijam]

Yes, closing it.