Cc: kaushal.modi@gmail.com, 27647@debbugs.gnu.org, jonaswestlund101@gmail.com, npostavs@users.sourceforge.net From: Romanos Skiadas <rom.skiad@gmail.com> Date: Fri, 13 Oct 2017 19:14:10 +0100It is indeed a GTK3 build and setting x-gtk-use-system-tooltips to nil does indeed make this problem go away.What about disabling scroll-bar-mode, while leaving the GTK tooltips in use -- does that also make the problem go away? Thanks.Just checked, still shows up with scroll-bar-mode disabled and the tooltips in use.What if you turn on display-line-numbers globally -- does the problem persist in that case with your default settings for GTK tooltips?