Still cannot reproduce after testing the following:

Singular Read per event
Code
on *:SOCKREAD:test-client:{
  if ($sockerr) test-stop [Client] SockRead error
  sockread 8192 &mybvar
  return
}

Multi-read per event
Code
on *:SOCKREAD:test-client:{
  if ($sockerr) test-stop [Client] SockRead error
  sockread 4092 &mybvar
  sockread 4092 &mybvar
  return
}

State-specific read per event
Code
on *:SOCKREAD:test-client:{
  if ($sockerr) test-stop [Client] SockRead error
  sockread 1024 &bvar
  while ($sockbr) {
    sockread 1024 &bvar
  }
  return
}