Fixed in #10070 - will be released in Piwik 3 👍

I just tried it on demo3 and i'm not yet sure that it's working well, as it seems almost all conversions are attributed to "device type = Unknown" whereas only 0.5% of all visits are unknown.. I'd expect only 0.5% of conversions (on average) to be attributed to unknown

@sgiehl can you take a look at https://demo3.piwik.org/index.php?module=CoreHome&action=index&idSite=1&period=day&date=yesterday#?idSite=1&period=day&date=2016-09-21&category=Goals_Goals&subcategory=3

Can't find the credentials for demo3 right now, but you seem to have requested an older report. As the dimension fields in goal report didn't exist before, the data can only be available for new requests.

sent you creds to demo3

As the PR was merged 27 days ago, we should have valid data for about 3+ weeks but I'm not seeing good data recently, even for yesterday. let me know what you find!

Seems not to have data on https://demo-anonymous.piwik.org/index.php?module=CoreHome&action=index&idSite=1&period=year&date=today#?idSite=1&period=year&date=today&category=Goals_Goals&subcategory=1 neither. trying to create a new goal to have more data soon.

Not sure yet if the feature works as expected, will check

I found the problem:
https://github.com/piwik/piwik/blob/3.x-dev/plugins/DevicesDetection/Columns/DeviceType.php#L73 always returns false (if the goal conversion isn't the first tracking request).

Not sure why that's the case. Thought the visitor properties should be filled with the data saved in the database. Will have a closer look at that later

Will check on demo3 in coming days

It works, well done @sgiehl 👍