The same happened for me, with the same addition to .config/kglobalshortcutsrc.
I ran Global Shortcuts in System Settings and saw there were no settings for KRunner. I attempted to set the default global shortcut (which remained as Alt+Space) and got the popup message:
"The shortcut 'Alt+Space' conflicts with the following key combination:
Shortcut 'Alt+Space' in Application Run Command for action Run Command"
and similarly for the default global alternate shortcut.
I chose to override the warnings and set the global and global alternate shortcuts back to their defaults. Krunner now launches from the keyboard as before the upgrade.
The same happened for me, with the same addition to .config/ kglobalshortcut src.
I ran Global Shortcuts in System Settings and saw there were no settings for KRunner. I attempted to set the default global shortcut (which remained as Alt+Space) and got the popup message:
"The shortcut 'Alt+Space' conflicts with the following key combination:
Shortcut 'Alt+Space' in Application Run Command for action Run Command"
and similarly for the default global alternate shortcut.
I chose to override the warnings and set the global and global alternate shortcuts back to their defaults. Krunner now launches from the keyboard as before the upgrade.
See also https:/ /bugs.kde. org/show_ bug.cgi? id=413368