Directory Opus crashes on initial access of root UNC paths

Directory Opus crashes on initial access of root UNC paths
I have a situation here where Directory Opus crashes when accessing the following type of paths trough a button.
When i type in the path in the 'address bar' of the lister it works fine and from then on the buttons also work.
I am using 11.4.3 (Beta) x64

Button 'codes':

Function: \NAS
Start in: \NAS\

Function: \Laptop\c$
Start in: \Laptop\c$\

Is there a workaround?

Try "Go \NAS" as the function (without the quotes), and start in C:\