Here is the xwininfo for what I think is an offending white window (triggered from chrome). The window is "IsUnMapped" and is override-redirect too. Override-redirect explains why it's always on top on all workspaces.
Obviously unmapped windows should never be visible. But I believe the Unity minimize handler breaks that rule, so Unity might be the cause.
Here is the xwininfo for what I think is an offending white window (triggered from chrome). The window is "IsUnMapped" and is override-redirect too. Override-redirect explains why it's always on top on all workspaces.
Obviously unmapped windows should never be visible. But I believe the Unity minimize handler breaks that rule, so Unity might be the cause.