SSIS Script Task appears to run, but actually doesn't

I have a script task that appears as running fine, but no matter what I put inside nothing ever get executed. I tried all sort of stuff: logging via the built in SSIS Logging mechanism, logging through additional variables and SQL Command task and I can never figure what's wrong. I tried to put breakpoint and it won't break during debugging.

This is VS 2015 with SQL 2016. This issue happens only when deployed on one of the SQL Server. I previously has no issue at all at that server. I deployed the same package on a different SQL box (same configuration) and it ran as expected.

EDIT: To better clarify the problem I started a new SSIS Package, it only 3 script tasks in it:

Test Task:

public void Main()
    {
        // TODO: Add your code here

        Dts.TaskResult = (int)ScriptResults.Failure;
    }

Once the Test Task is completed, it is linked to a "Success Task" if the test is successful, a "Fail Task" if it fails.

On VS, the test task fail as expected and goes to the fail task. However once deployed it stop working.

There are 3 things you can check:

(1) The TargetServerVersion property

Check that you are selecting the appropriate TargetServerVersion property

GoTo Project Properties >> Configuration Properties >> TargetServerVersion

(2) ForceExecutionResult property Value

Click on Fail Task and press F4 to show the perperty Tab, check that ForceExecutionResult is set to False.

(3) Run in 32-bit mode

Try running the package in 32-bit mode:

GoTo Project properties >> Debugging >> Run64BitRuntime  = False

StackExchange Database Administrators Q#191029, answer score: 3