ADDITIONAL SYSTEM INFORMATION :
Linux Mint 21.2

A DESCRIPTION OF THE PROBLEM :
If the xAxisRotation property is strictly zero the arc can not be drawn, the arc end point is ignored, and the path go from the arc start point to the next point after the arc.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See the attached code, otherwise it works with more simple coordinates

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
An half circle stuck to a rectangle
ACTUAL -
A triangle

---------- BEGIN SOURCE ----------
Path p = new Path();
ArcTo a = new ArcTo();
a.setX(113.8233880241887);
a.setY(316.3783247347362);
a.setSweepFlag(false);
a.setLargeArcFlag(false);
a.setRadiusX(9.5);
a.setRadiusY(9.5);
p.setStroke(null);
p.setFill(Color.BLACK);
p.getElements().add(new MoveTo(119.83171557850895, 334.4033073976959));
p.getElements().add(a);
p.getElements().add(new LineTo(63.99583622283988, 332.98750866852015));
p.getElements().add(new LineTo(70.00416377716013, 351.01249133147985));
p.getElements().add(new ClosePath());
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
a.setXAxisRotation(0.1); // works
a.setXAxisRotation(0.00000000000001); // works
a.setXAxisRotation(Double.MIN_VALUE); // doesn't work
a.setXAxisRotation(0); // doesn't work

FREQUENCY : occasionally