resize area of the vertical separator is too big

[Miklós Máté]

When two terminals are next to each other, the area where the mouse can grab the vertical separator to move it includes the first column of characters in the terminal on the right. This makes it impossible to select text including the first character of the line in the terminal on the right.

[Stephen Boddy (stephen-j-boddy)]

This is theme dependent. You don't mention which you are using. This has actually been raised before, and it was determined to be the Adwaita theme. There is a correction for that theme and also the gtk version of Breeze already in the gtk3 branch. It may become a global fix if too many themes are doing this.

[Miklós Máté (mtmkls)]

The theme is Breeze.

[Stephen Boddy (stephen-j-boddy)]

If you test a recent branch, you should find that this issue was fixed way back in rev 1672 (but after 1.90 was released).

[Miklós Máté (mtmkls)]

Still the same with revision 1725.

[Stephen Boddy (stephen-j-boddy)]

I don't recall Miklós, are you on very new release of gtk? I ask because there was a patch recently for the core code css fixes because (as usual) the gnome devs decided to play silly buggers and are now insisting on node names for selectors instead of class names. None of the external css fix files have been adjusted yet. Unfortunately I can't check a fix, as my 3.18.x Gtk doesn't have this issue, so how do I know I got the selector right.

In the file <terminator dir>/terminatorlib/themes/Breeze/gtk-3.0/apps/terminator.css
the line:
.terminator-terminal-window GtkPaned {

would have to turn into *something like*:
.terminator-terminal-window GtkPaned,
.terminator-terminal-window paned {

Now this might work (of course it might not) but that is the file to be fiddling around in. All of the fix files under those theme folders will need reviewing and updating for GTK 3.20+