Win7 32 bit
Broken: 2.78a, b
Exact steps for others to reproduce the error
- In default scene enable Composition nodes
- Add Glare node
- Switch to Simple Star and disable 45 degree rotation
- Switch back to Streaks and look at zero number of them
Please, do not remove option "1" because sometimes using 1 streak is very neat. And this was hacky thing to achieve this.