Map preview missing in Facebook post thumbnail when activity is shared.

Could you post a link to one of your past FB posts, where the sharing worked, and then another one, where it does not work?

Sorry but I can't do that, my FB posts are not public (and I don't want to make them public).

Here are 2 screenshots with the 2 posts:

Nothing changed in the meantime at my phone, account, watch...

4 months later, this feature is still broken.

When I share from a desktop web browser, I can see the statistics but not the map (only some generic photo). (photo 1)

When I share from the "Garmin Connect" Android app, I don't even see the stats (this never worked for me...) (photo 2)

Dear Garmin company, what will it take for this feature to be fixed ?

serban said:

Dear Garmin company, what will it take for this feature to be fixed ?

Try reporting it to the Support. They may not be aware it is not working if nobody reported it. This is just a user forum here, so reporting an issue here does not have much impact on its resolution.

Fair enough, I'll explore that option as well...

You can check if manually it generates miniature image of a map for your activity,
replace ***ID*** and run at F12 -> Console.

jQuery.getJSON(
    'https://connect.garmin.com/modern/proxy/activity-service/activity/***ID***/share',
    function(i){console.dir(i);}
);

After that, a generated miniature should be available by a link like this:
s3.amazonaws.com/garmin-connect-prod/share_activity_data/share_activity_***ID***.png

If that works, then try sharing again after a miniature is already up, so you can check if the share option lost correct link to a miniature or maybe it doesn't generate it.

Interesting !

After running that jQuery, I did get that png with the miniature map.

And after that, if I take the activity link that normally gets shared (connect.garmin.com/.../***ID***) and I append "/share/0" to it, then the facebook post will have the miniature map preview as a thumbnail (alongside the stats).
I discovered this workaround sometime last year, while trying to figure out why the thumbnail looked ok when I share it on a web-browser (back then it did), from the "garmin connect" web page, but was broken when sharing from the "garmin connect" android app.

HOWEVER, this workaround only fixes the thumbnail when the facebook feed is viewed in the  web-browser.

From the Facebook android app, the thumbnail is now even more-broken, meaning the stats are still missing, and even that generic bitmap is now missing, there's just a gray area instead...

So obviously there are software problems which Garmin does not care about or does not know how to fix.

And as a user, you can almost find a workaround, if you're an IT guy...

Update: this stopped working, the request now gets Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at "https://...". (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). Status code: 402.

So the only workaround stopped working, and in the meantime the support request that I did open did not get solved... 

Still works, make sure you run it with the page opened.

And your link has ID, only visible text was replaced.