Hope there is a fix for this;
There is a WebViewer for Autocad (.DWG) files. When opening them in a doc library, there are no issues.
However, if i search for a .DWG file, and try opening it there, it will just go to the property page of that file.
Is there any way to add the file-extension to the search index, so that it will open in the webviewer? i found tutorials about SP2010/SP2013, but nothing for SPOnline