Fix rect flipping issue with args and side-effects
Fix rect flipping issue with args and side-effects

Silverwolf90/vexflow,Tails/vexflow,aaronmars/vexflow,Silverwolf90/vexflow,Silverwolf90/vexflow,Tails/vexflow,Huji/vexflow,Huji/vexflow,Huji/vexflow,Tails/vexflow,aaronmars/vexflow,aaronmars/vexflow