I think it should

Can you please share the asset in this issue?
Besides, does it work with glb?
try this:
draco.gltf.zip
see, @donmccurdy viewer can open it, so why not 3js editor?
Thanks @Mugen87
This issue still persists on the editor. I haven't tried .glb draco compressed files yet but I can't seem to open .gltf draco compressed files.
sw.js:223 [SW] Not cached: https://threejs.org/examples/js/libs/draco/gltf/draco_wasm_wrapper.js
cacheFirst @ sw.js:223
async function (async)
cacheFirst @ sw.js:219
(anonymous) @ sw.js:213
sw.js:223 [SW] Not cached: https://threejs.org/examples/js/libs/draco/gltf/draco_decoder.wasm
cacheFirst @ sw.js:223
async function (async)
cacheFirst @ sw.js:219
(anonymous) @ sw.js:213
GLTFLoader.js:2039 Uncaught (in promise) TypeError: Cannot read property 'associations' of undefined
at GLTFLoader.js:2039
at async Promise.all (/editor/index 0)
at async Promise.all (/editor/index 0)
at async Promise.all (/editor/index 0)
at async Promise.all (/editor/index 0)
at async Promise.all (/editor/index 0)
at async Promise.all (/editor/index 0)
There is a bug in GLTFLoader which is already fixed in dev. Try it with:
http://raw.githack.com/mrdoob/three.js/dev/editor/index.html