C4D material and xpresso panels not open at double click


#1

Good morning.
I’ve issues with Cinema 4D R20.

When I’ve some materials and I want to modify it, I double-click on them but material editor panel doesn’t undock and it appears on right side of my computer’s screen.
Another issus is about Xpresso’s Tag, I doble-click on it and Xpresso Editor Panel doesn’t appear.

Recently I changed my computer monitor/screen, I’ve a SJ55 Series S34J55W 34" Ultra WQHD Monitor with 21:9 Wide Screen. Also I upgraded my Nvidia Graphic Driver to GeForce GTX 1070 Ti.

Someone has any idea what happened?
Thanks to all.