Keyboard cursor in xfce4-terminal not always focused after switching between workspaces
On one workspace I have some graphical app., firefox for instance, and on another I have a xfce4-terminal on full screen (F11) and no other apps. When I switch from the workspace when the graphical app is to the workspace when xfce4-terminal is, SOMETIMES(about the 50% chance) cursor(maybe window) remains not focused - like the first pic. attached - and I can't type in the terminal until I focus on the window with clicking the mouse on the window, or ALT+TAB - like switching between different windows on the same workspace, even if it is the only. It happens only when the terminal is on full screen (F11), and only on switching by shortcut - "WIN+w" for instance. To be clear, I call "not focused" the first pic., and "focused" - the second pic. Not sure if it is a xfce4-terminal issue.
It is annoying when switch often.