I have recently installed eclipse CDT on Linux.
Version: Oxygen.2 Release (4.7.2)
Build id: 20171218-0600
All the bindings like
Ctrl + D
Ctrl + Space
work fine after any project creation but when I restart eclipse they stop responding. I tried solution posted at this page answered by howlger which didn't work for me and upon some Googling I found a work around at eclipse bugs which resolved the issue by just disabling the welcome page.
But I would like to know the exact problem here, whether it is a focused view issue or something else. By the way, I would actually like to have the welcome screen during the launch.
This issue is fixed in latest installer.