NRF52840 GPIO 41 Drawing 140 uA when configured as input with PULLUP

Setup:
- We have a custom board using the BL654 (Laird Connectivity) module with the NRF52840 core using SDK 17.1

Issue:

- On power up we configure the GPIO 41 as an input with internal pullup (NRF_GPIO_PIN_PULLUP)

. The input in this test is disconnected from any button or input source

- We notice an extra ~ 140 uA when setting this input as a pullup. The extra 140 uA  doesn't occur when configuring input as no pull (NRF_GPIO_PIN_NOPULL)

- If we reset the board using the reset button then the issue goes away (even when using the internal pullup)

Question:

- Why are we seeing 140 uA current leakage on this pin?

example code

void config_gpio_input(void)
{
    nrfx_gpiote_pin_t pin_num  = 41u;
    uint32_t          err_code = nrfx_gpiote_init();
    ASSERT(0 == err_code);

    nrfx_gpiote_in_config_t in_config = NRFX_GPIOTE_CONFIG_IN_SENSE_TOGGLE(false);
    in_config.pull                    = NRF_GPIO_PIN_PULLUP;
    nrfx_err_t init_err               = nrfx_gpiote_in_init(pin_num, &in_config, gpio_event_handler);

    ASSERT(0 == init_err);
    nrf_drv_gpiote_in_event_enable(pin_num, true);
}

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