I've attached a screen shot from a program called Ghidra. It is a Java application and so it may be that it is a different issue. But it is using the GTK theme and the colours look the same as gedit.
** Attachment added: "Screenshot from 2020-04-02 22-42-48.png" https://bugs.launchpad.net/ubuntu/+source/yaru-theme/+bug/1857191/+attachment/5345217/+files/Screenshot%20from%202020-04-02%2022-42-48.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1857191 Title: Dark themes don't work well with highlighted current line in gedit To manage notifications about this bug go to: https://bugs.launchpad.net/gtksourceview/+bug/1857191/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs