Crash when highlighting a dash with the cursor

SoulseekQt crashes when the mouse cursor highlights a dash (en dash?). This can be reproduced by copying a title of a release listed on discogs.com and then pasting it to the search field. Then when highlighted by the mouse cursor, SoulseekQt crashes. This has to be done by dragging the cursor, not by clicking the field.

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SoulseekQt.exe caused an Access Violation at location 65312efe in module QtGui4.dll Reading from location 10f3e1c7.

Registers:
eax=0200001f ebx=0000002c ecx=000000c0 edx=0ef3e1a8 esi=0000001f edi=00000001
eip=65312efe esp=0028c9b0 ebp=0028ca38 iopl=0 nv up ei pl nz na pe nc
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00210202

Call stack:
65312EFE QtGui4.dll:65312EFE _ZN11QTextEngine18positionInLigatureEPK11QScriptItemi6QFixedS3_ib
6531B7D9 QtGui4.dll:6531B7D9 _ZNK9QTextLine9xToCursorEdNS_14CursorPositionE
654A948B QtGui4.dll:654A948B _ZNK12QLineControl6xToPosEiN9QTextLine14CursorPositionE
654A294B QtGui4.dll:654A294B _ZN9QLineEdit14mouseMoveEventEP11QMouseEvent
6515A0A7 QtGui4.dll:6515A0A7 _ZN7QWidget5eventEP6QEvent
654A39AC QtGui4.dll:654A39AC _ZN9QLineEdit5eventEP6QEvent
6510FA38 QtGui4.dll:6510FA38 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent
65118CB1 QtGui4.dll:65118CB1 _ZN12QApplication6notifyEP7QObjectP6QEvent
6A2B41F4 QtCore4.dll:6A2B41F4 _ZN16QCoreApplication14notifyInternalEP7QObjectP6QEvent
651135BB QtGui4.dll:651135BB _ZN19QApplicationPrivate14sendMouseEventEP7QWidgetP11QMouseEventS1_S1_PS1_R8QPointerIS0_Eb
65177253 QtGui4.dll:65177253 _ZN19QApplicationPrivate19translateTouchEventERK6tagMSG
6517A89F QtGui4.dll:6517A89F _ZN19QApplicationPrivate27initializeWidgetPaletteHashEv
763662FA USER32.dll:763662FA gapfnScSendMessage
76366D3A USER32.dll:76366D3A GetThreadDesktop
763677C4 USER32.dll:763677C4 CharPrevW
7636788A USER32.dll:7636788A DispatchMessageW
6A2D98F5 QtCore4.dll:6A2D98F5 _ZN21QEventDispatcherWin3213processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE
65174B08 QtGui4.dll:65174B08 _ZN19QApplicationPrivate14enterModal_sysEP7QWidget
6A2B30CA QtCore4.dll:6A2B30CA _ZN10QEventLoop13processEventsE6QFlagsINS_17ProcessEventsFlagEE
6A2B345B QtCore4.dll:6A2B345B _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE
6A2B7203 QtCore4.dll:6A2B7203 _ZN16QCoreApplication4execEv