Attach a SAVE GAME (.aoe3Ysav) or GAME RECORDING (.aoe3Yrec) of the match where you encountered the issue. Link it below if using an external file service.
Yes, this is a bug, but it doesn’t matter. You don’t need to start the Challenge in order to complete it.
Just go to the Skirmish tab and put the right settings in (FFA, 3 AI players, Standard difficulty, Large Silk Road map) and hold the Trading Post line for 2 minutes.
After setting up an XL size map, I was able to get the latest event icon. The translation into Spanish (and perhaps other languages) did not indicate that detail; maybe this was what brought players so much trouble