From a user's perspective, it makes absolutely no sense that selecting Hybrid-PDF stops me from choosing which parts of the document I want in the PDF. Even more so as there is no connection between those two things in the GUI.
Usability bug at the very least.
Steps to Reproduce:
1. open any file
2. open PDF export dialogue
3. select and deselect Hybrid-PDF option
Range option is disabled when Hybrid-PDF is selected, and enabled again when it is deselected
Range option stays enabled all the time
User Profile Reset: No
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36
Hello, see explanation in https://bugs.documentfoundation.org/show_bug.cgi?id=60994#c7
Closing as NotABug.