How do you make window tiling work in Xubuntu 26.04?

The default Super + something keyboard shortcuts don't work on my live session and even if I try to change it to some other shortcut key combination even not containing Super key, I can't get it work. No Super key combinations work in Window Manager settings, but some work in Keyboard settings. And Whisker Menu can be started by mere Super key release. Resetting to defaults didn't help.

In the Application Shortcuts tab of the keyboard settings the "xfce4-popup-whiskermenu" has the shortcut "Super L" (There is no "+"!). That shortcut seems to block the Super+ shortcuts for the window manager. Remove or change it to make them work again.

I found this solution in a post on the linuxmint forum in 2022 and it worked for me in xubuntu 26.04.