Q: I’m using Ubuntu 22.04. When I press Alt + Tab to switch to PDF Studio, it does not focus on the application. How can I solve this issue?

A: It is an issue due to Wayland and by default the Ubuntu 22.04 comes with Wayland enabled. To solve this issue, you can follow the instructions below to disable Wayland

Open File manager as a root

Go to /etc/gdm3/ and open custom.conf using a text editor

Set WaylandEnable=false

Save changes and reboot your computer