I deploy a trigger within a managed package and it does not run.

I copy and paste the trigger's code lines, to a new trigger on the same host org, and it works? Besides their name they are identical.

trigger Trigger_Name_1 on Account (before update) {
    SObject so = Schema.getGlobalDescribe().get('Account').newSObject();
    Boolean b = so.getSobjectType().getDescribe().fields.getMap().containsKey('Labels__c');
    if(b){
        List<Account> oldAcc = Trigger.oldMap.values();
        List<Account> newAcc = Trigger.newMap.values();
        for(Integer i = 0; i < oldAcc.size(); i++){
            if(b && oldAcc[i].Labels__c != newAcc[i].Labels__c){
                System.debug('Inside if ...');
                newAcc[i].adelAnyLab__Labels__c = newAcc[i].Labels__c;
                system.debug(newAcc[i].adelAnyLab__Labels__c);
            }
        }
    }
}


trigger Trigger_Name_2 on Account (before update) {
    SObject so = Schema.getGlobalDescribe().get('Account').newSObject();
    Boolean b = so.getSobjectType().getDescribe().fields.getMap().containsKey('Labels__c');
    if(b){
        List<Account> oldAcc = Trigger.oldMap.values();
        List<Account> newAcc = Trigger.newMap.values();
        for(Integer i = 0; i < oldAcc.size(); i++){
            if(b && oldAcc[i].Labels__c != newAcc[i].Labels__c){
                System.debug('Inside if ...');
                newAcc[i].adelAnyLab__Labels__c = newAcc[i].Labels__c;
                system.debug(newAcc[i].adelAnyLab__Labels__c);
            }
        }
    }
}