Qt Bottle Tutorial - Linux display issue

Hello,

I have OCC7.0.0 and Qt5.7.0. The bottle tutorial in samples/qt/Tutorial builds and runs, but when I resize the graphics window with the mouse curser, the graphic window display starts to shrink until I use the maximize button, then it stops. If I resize the main window when the graphic window is maximized the same thing happens. Un-maximizing the graphics window will make it stop. Resizing the main window (with the mouse) when the graphics window is not maximized does not cause a problem. I have the same issue with the IESample program, as well. I am attaching a short video that demonstrates the problem.

I used the included scripts to build and run the project. The one thing I changed is I commented out the lines in Tutorial.pro that added the freeimage and tbb libraries, since I don't have them installed. Here are the messages that appear in the console when I run it:

QObject::connect: No such signal QAction::activated()
libpng warning: bKGD: invalid index
TKOpenGl | Type: Other | ID: 0 | Severity: Medium | Message:
  OpenGl_Window::CreateWindow: window Visual is incomplete: no depth buffer, no stencil buffer
QObject::connect: No such signal QAction::activated()
QObject::connect: No such signal QAction::activated()
QObject::connect: No such signal QAction::activated()
QObject::connect: No such signal QAction::activated()
QObject::connect: No such signal QMdiArea::windowActivated (QWidget*)

I should also note that I tried on a different machine using Windows with the same Qt and OCC versions and did not have this problem.

Any ideas on what is wrong? Thanks in advance for any help anyone can provide.

Paul

System info:
Linux 4.7.0 kernel
gcc 6.1.0
Samsung NP350V5C laptop
Intel® Core™ i5-3210M CPU @ 2.50GHz × 4
Intel® Ivybridge Mobile graphics (on-board graphics)
6.0 GB RAM

EDIT: Video is actually from the Import/Export sample, but the behaviour is the same on the bottle tutorial.