OS: linux

The issue happens only in GTK look and feel which is native for Linux.

Steps to reproduce:
          1. Execute test case: javax/swing/JTable/KeyBoardNavigation/KeyBoardNavigation.java
          3. Press combinations of navigational keys with Ctrl+Shift key and observe the results
              Ctrl shift Right
              Ctrl shift Left

Expected behavior:
The extension is expected to be till Last/First column selected.

Actual behavior:
The extension happens only for next/previous column selected