MuseScore 2168 crash if double-click on instrument name 2 times

so, I have this score for soprano, alto and tenor, and, I wanted to double-click the soprano name that was on the first row to edit its name into Sopran. The first time I double-click, the name gets selected with a rectangular box around it, as opposed to a single click where the text just gets highlighted with blue.
Then, as I can't edit text yet, if I double click again, Musescore crashes with the following error details on WIndows 7 RC 32-bit.

Problem signature:
Problem Event Name: APPCRASH
Application Name: mscore.exe
Application Version: 0.0.0.0
Application Timestamp: 4acb702c
Fault Module Name: QtGui4.dll
Fault Module Version: 4.5.2.0
Fault Module Timestamp: 4a3f7ec4
Exception Code: c0000005
Exception Offset: 002fe005
OS Version: 6.1.7100.2.0.0.256.1
Locale ID: 1048
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

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