Interesting. Sadly, I imagine many users will have studies disabled since the Mr. Robot incident. I've re-enabled it but there does not appear to be a way to force it to check for updates. Guess it will show up in the next 6 hours.
I've seen the same tip elsewhere and tried, but didn't work for me.
What did (seem to) help was setting app.normandy.run_interval_seconds to a small value (21). At least just a couple of seconds after I did, all my addons came back.
