Tested with Nightly Build (14Dec2015)
Win8,1x64bits

The SELECT Tool is working fine. It just happened that when rotating the canvas, lets say 45º, the
Select Tool also "rotates" with the canvas, so when you select a shape the select-tool-box will also be at 45º

... so it is a bit weird trying to select a shape which was previously rotated. You may try it by yourself, you will not be ready for that the first time
:)
The REQUEST is for bringing the SelectTool to stay 0º rotated, independent of the rotation changes of the canvas