During the boss fight, a set of red targets will appear indicating where the grenades will land. Those targets are of course env_sprites triggered by trigger_delay.
The thing is, you can see all the targets if you're the server host, but everyone else can only see half of them. I decided to test it out and this is how it looks like:
The set of targets is activated by one trigger_delay, so it baffles me how it could only activate half of them. Is this my fault or CS2D's fault?
Edit: As soon as I made a thread, it hit me that I placed the env_sprites outside the map area. You can close this thread, I feel so stupid now.