Hello,
this is still a bug, yesterday checked on v2.0.0.beta10 +117. No chance to fix it by permalinks. It is really painful, because for each posted link I need to create a permalink.
For example, i can create a permalink for https://www.cuba-platform.com/development, but I have to do the same for:
https://www.cuba-platform.com/development/bla
https://www.cuba-platform.com/development/bla-bla
https://www.cuba-platform.com/development/bla-bla-bla
Moreover, first time the link is always broken until someone reports that it is broken 
. I even tried to use Saved searches to catch possible broken URLs, this made me a happy zombie-watcher 
.
Please fix it for subfolder installation…