Players glitch through each other in warpzones
If you walk towards each other - at roughly the same time - through a warpzone you will NOT bump into each other but move through the other player.
I found this first on Stormkeep and reproduced it with even more players on Geoplanetary so I don't think it's a map issue. Also did not happen before. Your model is kinda cut in half as well as you can see in the screenshots.
Maybe xonotic-maps.pk3dir#151 is related somewhat. Not sure if this is a code or darkplaces issue.