Far Manager, when hitting alt+enter, the resulting fullscreen leaves the taskbar visible

Far Manager 3.0 Build 5200 from rapps
0.4.11-RC-33-gb27a643 gcc dbg linux
VBox 4.3.12 + VBEMP + inbuilt Mesa

Reproduction steps
-set desktop resolution to 800x600 32bpp
-run the main app
-hit alt + enter to toggle into fullscreen mode

Expected result
-fullscreen hiding explorers taskbar xpsp3.png

Observed result
-fullscreen leaves explorers taskbar visible
0.4.11-RC-33-gb27a643__far3_0_5200.png
0.4.11-RC-33-gb27a643__far3_0_5200.log