Comment 2 for bug 1800355

This behaviour hits me recently, upgraded to bionic LTS from 16.04 LTS. Did not experience this before.

There is an askubuntu about it with more details:
https://askubuntu.com/questions/1069743/open-a-file-from-the-command-line

This should be fixed, as it is clearly a bug not to be able to open files from command line, man states:
kile [ generic-options ] [ --line line ] [ --new ] [ file ]

This is the currently shipped version that I use:

LANG=C apt-cache policy kile
kile:
  Installed: 4:2.9.91-4
  Candidate: 4:2.9.91-4
  Version table:
 *** 4:2.9.91-4 500
        500 http://ftp-stud.hs-esslingen.de/ubuntu bionic/universe amd64 Packages
        100 /var/lib/dpkg/status