How to open files with http-url in LibreOffice/Linux ?

In OpenOffice I've found it always nice feature to load files from the web
via the http-protocol in a macro. But after switching to LibreOffice I
couldn't get it running (see my bug description
https://bugs.freedesktop.org/show_bug.cgi?id=75701).

I tried to load an URL from the GUI, but neither versions 3.6 nor version
4.1.5.3 worked, maybe due to my Win8.1-64Bit environment. Instead
LibreOffice seems to freezefor at least more than 20min: "No response"-hint
in the Windows title-bar.

For reference I tried to open an http-url on a Linux-PC (Open-SuSE). But I
couldn't figure out a way to enter a URL in the KDE-Open-File-Window.
LibreOffice or KDE always responds with: "You can only open local files!"

So does anybody know how to enter http-URL in LibreOffice running in
KDE-environment?

BR
Hans-Peter