This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
When I have disabled the Smooth edges of screen fonts the line numbers disappeared. (Exactly after: This PC -> Properties -> Advance System Setting -> Advanced -> Performance (Settings...) -> Visual Effects -> Custom -> Smooth edges of screen fonts) After switching it again on nothing happen. To see the line number, I should close the editor pane and open the source file again.
*** This bug has been marked as a duplicate of bug 258618 ***