I can confirm, Win10x64:
Version: 5.1.0.0.alpha1+
 Build ID: 7289a140fc68dc898ba2b2357cc960968195f236
 Threads 4; Ver: Windows 6.19; Render: GL; 
 TinderBox: Win-x86@39, Branch:master, Time: 2015-11-24_23:58:19
Version: 5.1.0.0.alpha1+ (x64)
 Build ID: d667e3210b12c7ce3b3727e2a0e369a520fbaaa4 
 Threads 4; Ver: Windows 6.19; Render: GL; 
 TinderBox: Win-x86_64@42, Branch:master, Time: 2015-11-25_01:47:38
Miguel Ángel
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