Maps 24166 and 24176 appeared in my maps collection when someone tried to copy my Stirling's Europe at War map (21211 map). I have since deleted 24166 and 24176 since it filled up my maps section. The errant copies appear when another person tries to copy the map, but it doesn't happen every time.

i've essentially reported this problem which i have had through the official form, however not so eloquently, or rather understandably.  hope devs see this and understand it's the same problem i've been having.

We have seen this and thought we had squashed that bug. Apparently we did not. Looking again ...

Sorry for that!

Take a look at the time stamp for the 24166 and 24176 maps. If you fixed the bug after those instances, then I'm just slow in reporting the bug.