Enemy OMW pings visible
I've noticed over the last month in regular and ranked matches that I'm seeing OMW pings coming in without a name being put up in teamchat. I've noticed a correlation between these random unnamed pings and enemies showing up to where the ping originated so I've come to the conclusion they're enemy pings being incorrectly shown. I'm not sure if i can provide any details on how to recreate this issue, but i have a theory that it might occur when a quick string of multiple OMW pings are done by the same person.
Best of luck figuring this all out, SteamBlarg