If one opens his startmenu, goes to programms -> system -> filemanager and uses right click to copy the entry to the desktop, a desktop-symbol is added. Opening it opens dolphin, just as expected. Under the settings of the symbol you can pick out the command: dolphin %i -caption "%c" %u Now going to systemsettings and hotkey, and adding a hotkey for 'Meta + E' with the command: dolphin %i -caption "%c" %u causes dolphin to open with a split view. Reproducible: Always Steps to Reproduce:
This is bug in kde itself. Thus please report on bugs.kde.org, where you write the bug number you opened there as comment here, so we can track it. We are mostly not upstream developers and the issues like this should be reported directly to them. Cheers