1.11.7 : save dialog stops responding when selecting and copying filename to clipboard

[jdo_1975]

XnView: MP 1.11.7 - 64 bit
OS: Linux 64bit

When saving a file, when one wants to copy the filename of the file to be saved to the clipboard, XnView stops responding and must be forcefully closed.

Effect: Program crashes / hangs

To reproduce:
1. File => Save As
2. Enter a filename in the dialog
3. Select the filename (right mouse click => Select All)
4. Copy the filename (right mouse clock => Copy)
5. Save or cancel button does not respond to clicking, program hangs

Actual behaviour (bug): Program hangs

Expected behaviour: File saved, filename copied to clipboard