AlReader 2.5 version 110502, pressing Alt+Enter to switch into fullscreen mode leaves the taskbar visible

nothing new, known since long time.

0.4.12-RC-39-g27da885 gcc dbg linux affected, VBox4.3.12, VBEMP,
desktop resolution 800x600 32bpp

When having the "AlReader 2.5 version 110502" main app open, press Alt+Enter to switch into fullscreen

Expected result
app switches to fullscreen and taskbar is not visible

Observed result
app switches to fullscreen but taskbar remains visible

Ros does not log anything in this case, as no resolution switching takes place.

I guess the bug is in explorer_new traywnd.cpp, around the many SetWindowPos() cases