Qt 5.9.0 to 5.9.4 work fine, but Qt 5.9.5 and 5.9.6 have issues

Question

I'm playing around with this repo: https://github.com/qt-labs/qt3d-editor

My observation:

1. When using Qt 5.9.0, 5.9.1, 5.9.2, 5.9.3 and 5.9.4, the application can import files, like STL.
2. But with Qt 5.9.5 and 5.9.6 the application cannot import any file, it gets stuck in import process and never finishes importing. Also, the same issue happens when working with Qt 5.11.

I assume it might be related to Qt3D module. The 5.9.5 change log for Qt3D mentions that only minor code improvements are done. Can anybody give a hint why this is happening?

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The screen shot of import button getting stuck is shown below:

Answer 1

Tested with Qt 5.11.2 and it works fine. Take a look at this:

Importing objects in Qt3D doesn't work but there's not error message