Some keyboard shortcuts don't work.

Some shortcuts like "", "", "Ctl" and "Ctl" don't work (plus, minus, zoomin, zoomout).

I compiled the Qt libraries from source using the following configuration:

./configure -prefix /usr/local/Qt-5.2.1-openGL-static -release -opensource -confirm-license -static -largefile -no-javascript-jit -no-qml-debug -qt-zlib -qt-libpng -qt-libjpeg -qt-freetype -no-harfbuzz -no-openssl -qt-pcre -qt-xcb -qt-xkbcommon -no-compile-examples -gui -widgets -no-nis -cups -strip -no-dbus -nomake tools -nomake examples -nomake tests

I provide a small project that demonstrates the problem.
When compiled with Qt 4.8.5 it works fine.