TM4C1294NCPDT: Issues with TIMER_CFG_A_ACT_SETCLRTO

I have an interesting issue with the timer on a TM4C that I have been trying to resolve.

TIMER_CFG_A_ACT_TOGGLE works exactly as expected, but TIMER_CFG_A_ACT_SETCLRTO does nothing. The output stays low. After trying TIMER_CFG_A_ACT_SETTOGTO andTIMER_CFG_A_ACT_CLRTOGTO, it appears that the action on timeout is working correctly, but the immediate set and clear do not work.

#include <stdint.h>
#include <stdbool.h>

#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/timer.h"
#include "inc/hw_memmap.h"

int main(void)
{
    SysCtlClockFreqSet(SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN | SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480, 120000000);

    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOM);

    SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER5);

    while (!SysCtlPeripheralReady(SYSCTL_PERIPH_TIMER5));
    while (!SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOM));
    GPIOPinTypeTimer(GPIO_PORTM_BASE, GPIO_PIN_6);
    GPIOPinConfigure(GPIO_PM6_T5CCP0);

    while(1)
    {
        TimerConfigure(TIMER5_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_A_ONE_SHOT | TIMER_CFG_A_ACT_SETTO);
        TimerLoadSet(TIMER5_BASE, TIMER_A, 2400);
        TimerEnable(TIMER5_BASE, TIMER_A);
        SysCtlDelay(400000);
    }

	return 0;
}