experimental FBReader packages on Harmattan: segfault on swipe away

$ gdb -ex run --args $(which FBReader)
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Reading symbols from /usr/bin/FBReader...(no debugging symbols found)...done.
Starting program: /usr/bin/FBReader 
[Thread debugging using libthread_db enabled]
loading /usr/lib/zlibrary/ui/zlui-qt4.so
Using the meego graphics system
Found SGX/MBX driver, enabling FullClearOnEveryFrame 
Found v1.4 driver, enabling brokenTexSubImage 
hijackWindow() context created for ZLQtApplicationWindow(0x299b70) 1 
Found SGX/MBX driver, enabling FullClearOnEveryFrame 
Found v1.4 driver, enabling brokenTexSubImage 
QGLWindowSurface: Using plain widget as window surface QGLWindowSurface(0x318fe0) 
hijackWindow() context created for QWidget(0x3cb190) 1 
Found SGX/MBX driver, enabling FullClearOnEveryFrame 
Found v1.4 driver, enabling brokenTexSubImage 
QGLWindowSurface: Using plain widget as window surface QGLWindowSurface(0x41a458) 
Meego graphics system destroyed

Program received signal SIGSEGV, Segmentation fault.
0x3b5460f4 in QPainter::device() const () from /usr/lib/libQtGui.so.4
(gdb) bt
#0  0x3b5460f4 in QPainter::device() const () from /usr/lib/libQtGui.so.4
#1  0x3b2a5808 in ZLQtPaintContext::setFont(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int, bool, bool) ()
   from /usr/lib/zlibrary/ui/zlui-qt4.so
#2  0x3ab05d08 in ZLTextArea::Style::Style(ZLTextArea const&, shared_ptr<ZLTextStyle>) () from /usr/lib/libzltext.so.0.13
#3  0x3aaf9d50 in ZLTextArea::paint() () from /usr/lib/libzltext.so.0.13
#4  0x3ab211c4 in ZLTextView::paint() () from /usr/lib/libzltext.so.0.13
#5  0x001ef25c in ?? ()
#6  0x001ef25c in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)