No, they are a real pia. Using IFTTT you can set up an applet (just something that completes a designated action when the defined trigger , like disconnecting from wifi, ovvurs) to close door via a virtual switch (link to instructions below) when you disconnect from Wi-Fi
To use IFTTT download app from play store, create an acct then in SmartThings app go to marketplace, smartapps and add IFTTT and give it permission to use switches.
Go back into IFTTT and create an applet which will look something like this:
For the network you would just type in your network name and the switch just use the name of the virtual switch you created.
It might look like a lot but its actually not very difficult, most of it is already done for you within apps