Indesign Pen Tool automatically closes paths
When we create a clipping path in InDesign CC 2017 using the Pencil tool, sometimes we have the problem that the path automatically closes.

From one click to another, the path suddenly closes on its own.

It usually happens when a path is placed around an image that is magnified in full resolution and across the screen. Our computers are equipped with 16 GB of RAM, an external graphics card (GeForce GTX 745) and should actually handle this. Does anyone have an idea?
