I'm having this problem as well under XFCE. I use CTRL+ALT+ARROWS to move between my 6 (3x2) workspaces, and each time I move to the desktop having chromium is only partially refreshed.
I've found that it only happens if I switch on XFCE's "Enable display composition" under Settings --> Window Manager Tweaks --> Compositor.
If I disable that option, then the refresh problem disappears (but I loose as well the fance transparency effects on terminals and windows :( ).
I'm having this problem as well under XFCE. I use CTRL+ALT+ARROWS to move between my 6 (3x2) workspaces, and each time I move to the desktop having chromium is only partially refreshed.
I've found that it only happens if I switch on XFCE's "Enable display composition" under Settings --> Window Manager Tweaks --> Compositor.
If I disable that option, then the refresh problem disappears (but I loose as well the fance transparency effects on terminals and windows :( ).
PS: It happens as well in Linux Mint 17.