Multiple tabs creates double borders in Thunar

[newhoa]

In a Thunar window, if you open a new tab the border in the icon view (or detail/compact view) will have an additional border on all 4 sides.

Also, idk if this warrants another bug report but the color in between the tabs themselves doesn't match the background. Edit: This doesn't belong with this issue.

Thunar with no tabs

Thunar with tabs

[ochosi]

This is sort of how it's supposed to look and how other tabs look, but I agree that it's not a great look.

We're still sticking to a style that is from Gtk2 times and built around Gtk2 limitations. With less and less applications still using Gtk2 and visual consistency there being a bit less of a thing I guess we could move on to another look.
I considered doing this a few times in the past but just never got around to redesigning them...

[newhoa]

@ochosi I'm not sure if I explained the first part well. I wasn't referencing the border of the tab itself, but the border in the icon view area when tabs are opened. The easiest place to see this, in this picture, is between the icon view area and the sidebar -- but it doubles the border on all sides in the icon view (in the pic you can see a double border at the top under the inactive tab and on the right side of the window).

I tried this out in a few other themes and the added border does not seem to happen with Adwaita, Yaru, Numix, or Arc.

I'm not familiar enough with the theme to know how this would change other parts of the theme, but adding this to Gtk Inspector gave it the look that I think would be intended (here is the result). Not sure if it'll be any help but here it is.

/* This removes the border of the icon area only when there is a tab */

notebook stack:not(:only-child)
{
border-width: 0 0 0 0;
}

/* Keeping the top border above seems to create a */
/* double border on inactive tabs. */
/* This ensures the active tab has a bottom border */
/* without creating a double border for inactive tabs. */

notebook tab:checked
{
border-width: 1 1 1 1;
}