Maybe it symbolises them changing their ways after being racist in the past, hence throwing it away? I can’t say it looks particularly great but it could mean more to the person themselves. Just speculation
edit: coming back I realise you are focusing on the placement, so apologies if my reply is out of place. Though I’m going to leave the comment anyway
I still do this sometimes when people are gone somewhere longer than expected
The cube pub, I’m assuming?
This is one of the first games I’ve taken time to stop and take time to use the photo mode because of this feature