Help us help you

• I have checked that my issue doesn't exist yet.
• I have tried my absolute best to reduce the problem-space and have provided the absolute smallest test-case possible.
• I can always reproduce the issue with the provided description below.

Environments

• I have updated SourceMod to the latest version and it still happens.
• I have updated SourceMod to the latest snapshot and it still happens.
• I have updated SourceMM to the latest snapshot and it still happens.

Description

It looks like ServerCommandEx() can't grab output for any command (if executed via server console), if this call placed in command handler, and can "kill" server if used in another subcommand with ServerCommandEx().

Problematic Code (or Steps to Reproduce)

#include <sourcemod>

public void OnPluginStart()
{
  RegConsoleCmd("sm_stats", CmdStats);
}

public Action CmdStats(int iClient, int iArgC)
{
  char szBuffer[512];
  ServerCommandEx(szBuffer, sizeof(szBuffer), "stats");
  
  ReplyToCommand(iClient, "Command length response: %d", strlen(szBuffer));
  ReplyToCommand(iClient, "Command output:\n%s", szBuffer);
  return Plugin_Handled;
}

1. Join to server with admin with access to sm_rcon.
2. Execute sm_rcon stats. Receive output (all ok).
3. Execute sm_stats. Receive output (all ok).
   
4. Execute sm_rcon sm_stats, get a server freeze. Fatal freeze. He don't unfreeze.
   In Task Manager, SRCDS uses fully one server CPU.