Python module output C message not written into stand-alone C message

[MaelArrive]

Describe the bug
Redirecting a python module output C message to a stand-alone C message doesn't work for some reason. The module output is never written into the standalone message.

To reproduce
Run this code:

from Basilisk.utilities import SimulationBaseClass
from Basilisk.utilities import macros
from Basilisk.architecture import bskLogging

class TestPythonModule(sysModel.SysModel):
    def __init__(self):
        super().__init__()
        self.dataOutMsg = messaging.CModuleTemplateMsg_C()
    def Reset(self, CurrentSimNanos):
        payload = messaging.CModuleTemplateMsg_C_zeroMsgPayload()
        self.dataOutMsg.write(payload, CurrentSimNanos, self.moduleID)
        self.bskLogger.bskLog(bskLogging.BSK_INFORMATION, "Reset in TestPythonModule")
    def UpdateState(self, CurrentSimNanos):
        payload = messaging.CModuleTemplateMsg_C_zeroMsgPayload()
        payload.dataVector = [1.0, 2.0, 3.0]
        self.dataOutMsg.write(payload, CurrentSimNanos, self.moduleID)
        self.bskLogger.bskLog(bskLogging.BSK_INFORMATION,f"Python Module ID {self.moduleID} ran Update at {CurrentSimNanos*1e-9}s")

def run():
    scSim = SimulationBaseClass.SimBaseClass()
    dynProcess = scSim.CreateNewProcess("dynamicsProcess")
    dynProcess.addTask(scSim.CreateNewTask("dynamicsTask", macros.sec2nano(1.)))

    testBlock = TestPythonModule()
    testBlock.ModelTag = "testBlock"
    scSim.AddModelToTask("dynamicsTask", testBlock)

    standaloneMsg = messaging.CModuleTemplateMsg_C()
    standaloneMsg.write(messaging.CModuleTemplateMsgPayload())
    messaging.CModuleTemplateMsg_C_addAuthor(testBlock.dataOutMsg, standaloneMsg)

    scSim.InitializeSimulation()
    scSim.TotalSim.SingleStepProcesses()

    print("dataOutMsg:")
    print(testBlock.dataOutMsg.read().dataVector)
    print("standaloneMsg:")
    print(standaloneMsg.read().dataVector)

    return

if __name__ == "__main__":
    run()

Expected behavior
dataOutMsg and standaloneMsg must have the same value ([1.0, 2.0, 3.0]).