Tested with Shumway 0.6.87 at the time of writing.
[16:58:21.816] AVM1 error: TypeError: la is undefined
[16:58:21.817] AVM1 error: Invalid number of arguments: NaN
Both errors are logged from shumway.js:15283 and appears to be caused by FlashStreamConverter.js.
Worst part about this is the fact that the object element is hidden, so users can't easily fall back to Flash.
This is not related to #217, however, this issue is only observable on Google Translate with that fix.