I have recently started noticing a bizarre issue when using SQLdeveloper. The cursor seems to dissapear and when trying to code the characters do not appera where you want them to be. It is like trying to find your way around in the dark.
In all cases the O/S has remained constant (Windows 7 64bit). This has occurred on different VirtualBox platforms (4.1.nn), different Guest O/S like Oracle Linux 6.9 and 7.n and SQLdeveloper 4.2 and 17.n.
Enough RAM. Do notice that after a long time that SQLdeveloper does not repaint the screen properly.
Has anyone experienced this? Does ThatJeffSmith know about these issues as they seem to be reported an various forums?