Gpio Binding doesn't work correct with pin 17 and 4

[FirstWithThisName]

If openhab reloads the item file with the gpios this error messages appears:

2019-10-16 14:19:41.649 [ERROR] [ab.binding.gpio.internal.GPIOBinding] - Error occurred while creating backend object for item RELAY_1, exception: The pin with number '17' is already registered
2019-10-16 14:19:41.795 [ERROR] [ab.binding.gpio.internal.GPIOBinding] - Error occurred while creating backend object for item RELAY_2, exception: The pin with number '4' is already registered

This is a snippet my related items file:
`
/* relays connected to gpio */

Switch RELAY_1 "RELAY_1" { gpio="pin:17 force:yes" }
Switch RELAY_2 "RELAY_2" { gpio="pin:4" }
Switch RELAY_3 "stall" (outdoor, light) { gpio="pin:16" }
`
I have more gpios in use, and the work fine.
After a reboot, all pins are working as expected.
I found out that the pins are configured as input by looking at the file /sys/class/gpio/gpio(4|17/direction

After changing the direction I am able to control them via bash, but don't via openhab.
If openhab reloads the items file I get the same error message.

I am using a raspberry pi b+ with raspbian and openhab version 2.4.0.
The user openhab is member of openhab tty dialout pi bluetooth gpio.