DDM 2.0.0.138, side by side windows overlap

Description: Tiling three same-sized windows (layout c) across results in an overlap between the middle and right windows. The same occurs when using the six-window layout (layout d), and also with three windows stacked vertically (layout b), but not with layout a.

This is happens with both horizontal and vertical taskbars.

Figure 1: layouts a, b, c & d

Figure 2: layout c with a vertical taskbar

DDM 2.0.0.138