Age of Strategy Forums

You can detect unfinished or damaged mines (both water and land) by tapping on adjacent enemy engineers or riflemans. A hammer icon is displayed over tiles with those mines.

Lol, you can see your own mines, only enemies cannot see it.
Well I can guarantee you that it was your unit, because engineers and riflemen can repair only their or allies unit (hence hammer icon, appears only to your units or allied units). Hope it serves your purpose!
Anyways
Have a great day!

No, there were enemy mines. And engineers belonged to my opponent too. I'm 100% sure. Mines wasn't displayed but I could detect them by hammer icon displayed over them after tapping on adjacent enemy engineers when it was my turn.

Can you send a screenshot, did it happen only once or it happened numerous times, if so can you recreate that situation?

1st player's turn

2nd player's turn

2nd player's + tap on the 1st player's engineer


It works with all nations, with any mending unit, both for damaged and unfinished mines. This is game mechanics bug, so, only Stratego can fix it, I guess.

Well, it'll need some coding, I'll test it myself too. Well can you please remove the screenshots attachment and rather upload it somewhere (Google Drive) and share link of these screenshots.
And just to double check, what was your team color in the above game?

attachments are good - external links already.