Help GNOME SHELL to not hide the floating toolbar

Remmina creates the floating toolbar (a popup window) at position y=-200
to have it hidden. But Gnome Shell sometimes is unable to show it.
Creating it at position y=6000 seems to help a little bit
gnome shell not to hide it.
Merge branch 'gtk3' of github.com:giox069/Remmina into gtk3
Help GNOME SHELL to not hide the floating toolbar \#309

Remmina creates the floating toolbar (a popup window) at position y=-200
to have it hidden. But Gnome Shell sometimes is unable to show it.
Creating it at position y=6000 seems to help a little bit
gnome shell not to hide it.