kde-plasma/oxygen installs six folders under /usr/share/icons (KDE_Classic, Oxygen_Black, _Blue, _White, _Yellow, and _Zion). Under each of those is a cursors folder. In each of them col-resize is a symlink to split_v and row-resize is a symlink to split_h. These links are backwards: col-resize should point to split_h (resizing a column is adjusting a split horizontally) and row-resize should point to split_v. If you look in /usr/share/icons/breeze_cursors (part of kde-plasma/breeze) split_h points to col-resize and split_v points to row-resize, which is the correct matching. (I don't think it matters which is the symlink and which is the real file, just that they are paired correctly.)
Just for background, I discovered this in mail-client/balsa, where I noticed the cursor icon was incorrect for resizing panes.
Could you please create a bug upstream for us to track, or even better, submit a patch on KDE's phabricator resource?
I've been away for a week, but will fill upstream and post link here. If I can figure out the actual source and what the patch would be, I suppose this can be my first use of Phabricator, but I do have an account.
https://bugs.kde.org/show_bug.cgi?id=384864 just filed.
Created https://phabricator.kde.org/D8267 a while ago, and added additional chanages to symlinks dir, as requested there. I have no idea how to get anyone to actually review it.
The bug has been closed via the following commit(s):
Author: Andreas Sturmlechner <email@example.com>
AuthorDate: 2018-09-12 11:02:32 +0000
Commit: Andreas Sturmlechner <firstname.lastname@example.org>
CommitDate: 2018-09-12 11:03:26 +0000
kde-plasma/oxygen: Fix incorrect symlinks
Package-Manager: Portage-2.3.49, Repoman-2.3.10
.../oxygen/files/oxygen-5.13.5-symlinks.patch | 162 +++++++++++++++++++++
kde-plasma/oxygen/oxygen-5.13.5-r1.ebuild | 48 ++++++
2 files changed, 210 insertions(+)