That bug appears to be an unintended consequence of another issue that arose from the Ping system that meant players were using it to set up targets for their pre-fires.
CSGO's ping system has been a troublesome feature since it was introduced. (Picture: Valve)
Another changes in the 17th February patch, that is now live on servers, include several map fixes to Anubis, Engage, Apollo and Frostbite.
CS:GO Feb 17 patch notes
— Reskinned the signs and information boards
— Fixed the wallbang through the trim on the mid building between double door and the CT house
— Added some grenade clips to prevent weird grenade bouncing on A heaven
— Fixed several visual issues
— Removed boost spots
— Updated Bot NAV (Thanks Ham)
— Multiple exploits, clipping faults and boosts etc. fix based on the feedback of Oliv1er and timure of the MapInk Discord
— Fixed spawn boost exploit (thanks Marius)
— blocked guns going out of CT spawn so much with a big sign. (thanks Fnugz)
— Removed window glass from buildings to improve gameplay
— Fixed exploit in Town
— Fixed stuck spots
— Fixed certain visual errors
— Adjusted border clipping
— Fixed floating exploding barrel/turret spawns
— Adjusted prop fade distance in the bunker
— Added drone clips to buildings at Tourist and Radio
– Pings no longer highlight players. This eliminates any instances of being able to reveal a hidden enemy.
– Fixed a bug which caused the incorrect footstep sounds to be played on some surfaces.
– Fixed short-handed bonus being given in Guardian mode.
– Fixed visual shuffle in map vote at end of match.