Visual Tweak: Missing 1px border on right-hand sidebar in Dual Mode

This is a very small enhancement request, so I’ll totally understand if it never sees the light of day…

The border between the file list and the sidebar on the right-hand sidebar does not match the border on the native sidebar on the left.

On the left, the native border consists of two 1px vertical lines: A very pale blue line (red: 219, green: 225, blue: 230) along the edge of the sidebar itself, and a slightly darker grey line (red: 189, green: 189, blue: 189) separating the sidebar from the file list.

On the right, only the pale blue border exists — the slightly darker grey line appears to be missing.

It doesn’t affect performance or behavior, but my web designer’s eye catches it every time.

Thanks for an outstanding product!