Projectiles getting immediately deactivated in POV demos

[in0finite]

Research

• [X] I've already searched and I could not find an existing issue or discussion about this issue.

Description

In POV demos, when a projectile is thrown, it gets immediately deactivated (IsActive = false) and his position doesn't update anymore.

Code to reproduce

using DemoFile;
using DemoFile.Game.Cs;
using System.Diagnostics;

internal class Program
{
    public static async Task Main(string[] args)
    {
        var path = "pov.dem";

        var sw = Stopwatch.StartNew();

        var demo = new CsDemoParser();

        List<CBaseCSGrenadeProjectile> projectiles = new();

        demo.EntityEvents.CBaseCSGrenadeProjectile.Create += e =>
        {
            projectiles.Add(e);
        };

        demo.EntityEvents.CBaseCSGrenadeProjectile.Delete += e =>
        {
            projectiles.Remove(e);
        };

        var reader = DemoFileReader.Create(demo, File.OpenRead(path));
        await reader.StartReadingAsync(CancellationToken.None);

        while (await reader.MoveNextAsync(CancellationToken.None))
        {
            //projectiles.RemoveAll(e => !e.IsActive);

            int numActive = projectiles.Count(e => e.IsActive);

            var projectile = projectiles.FirstOrDefault(e => e.IsActive);
            //if (projectile == null)
            //    continue;

            //if (demo.CurrentDemoTick.Value % 100 != 0) // rate-limit
            //    continue;

            Console.WriteLine($"[{demo.CurrentDemoTick.Value / 64f:F4}]  {numActive}  {projectile?.EntityHandle.Value}  {projectile?.Origin}  {projectile?.Rotation}");
        }

        Console.WriteLine($"Finished in {sw.Elapsed.TotalSeconds:N3} seconds");
    }
}

Affected demos

all POV demos

[in0finite]

This also happens for weapon (CCSWeaponBase) entities. They seem to be randomly deactivated, even those that are held by demo recording player. It probably happens for other entities aswell, but I haven't checked them.