Tweak arrows do not appear when double-clicking helix

[MajesticSammie]

I double click the helix in the tutorial. It turns purple, but no arrows appear. According to all of the forums I've read and outdated tutorial videos I've looked at, this is most likely a bug.

[MajesticSammie]

Update: I switched from an art tablet to a mouse and suddenly it works??

I'm actually a bit shocked you guys don't have art tablet support :/