Only one bot receives the message when more than one are in the same chat

[kted]

When there are more than one bot in a chat, the first one to receive the message acts on it, ant the others do not receive anything, as if the message get deleted as soon one bot receives it.
This is my bot initialization code.

  bot.setToken(myToken);
  bot.skipUpdates();
  bot.setPollMode(fb::Poll::Long, 20000);
  bot.onUpdate(handleBot);

When there is only one bot listening in the chat, the message prints whatever I type, instantly.
When there are more, it's a hit and miss, as only one gets the update.

void handleBot(fb::Update& u) {
  Serial.println(u.message().text());
  if (u.isMessage()) handleMessage(u);
}

Is there a setting somewhere, to NOT erase a message after it is received?

[GyverLibs]

You need to change group privacy settings with bot father

[kted]

Still the same, with the bot group privacy turned off.
It used to work perfectly with the old version of the bot.
Something else is going on...
When I flash a firmware using the old version, it just works.
The only thing I changed is the calls with the new update() format

FastBot:

bool botInit(){
  bot.setToken(TOKEN);
  bot.setChatID(CHAT_ID);
  bot.attach(newMsg);
  bot.skipUpdates();
  bot.clearServiceMessages(true);
  int botOK = bot.sendMessage("Hello");
  if(botOK !=1){
    Serial.println("Bot unable to send");
  }
  return botOK;
}

// This is always received and printed by all devices
void newMsg(FB_msg& msg) {  
  Serial.println(msg.text);   
}

FastBot2:

bool botInit(){
  bot.setToken(TOKEN);
  bot.skipUpdates(true);
  bot.setPollMode(fb::Poll::Long, 20000);
  bot.onUpdate(handleBot);
  bot.sendMessage(fb::Message("Hello",conf.my_chat));
  bool botOK = bot.lastBotMessage() > 0;
  if(!botOK){
    Serial.println("Bot unable to send");
  }
  return botOK;
}

// The first device to receive the message prints it, the others don't receive anything
void handleBot(fb::Update& u) {
  Serial.println(u.message().text());
}