Clipped webpage forever in "loading..." state

I pressed the "Clip to Capstone" button on this URL: http://www.vldb.org/2019/?important-dates on Chrome on desktop, and saw the scaled-down webpage correctly show up in Capstone on that computer. However, on the Pixelbook (having previously been connected to the same workspace URL), the shelf displays only a white rectangle containing the text "Loading...". I have tried this with a few different webpages, and it doesn't always happen, but does seem to happen reasonably frequently. It seems to be accompanied by the following exception in the console:

```
ClientPeer.ts:58 protocol.onerror ED-Hr Error: Remote timed out
at d._ontimeout (index.js:453)
at d.i (events.js:165)
at d.r.emit (events.js:78)
at d._kick (index.js:196)
at index.js:96
a.on.e @ ClientPeer.ts:58

protocol.onerror %s
a.on.e | @ | worker.js:8
```

Reproduce the issue by clipping the reported VLDB URL in Chrome, then opening the same workspace on the Pixelbook. Start with the timeout reported at ClientPeer.ts:58 and the related worker.js output. Done means the clipped page no longer remains indefinitely on a white “Loading...” screen, including when the remote connection times out.

Written by the indexing model from the issue text.