Using the direct selection tool on a path, whilst holding ‘shift’ to drag causes crashes/can’t preview.
Mac Mojave 10.14.1 > Illustrator 23.0.1.
This issue does one of 3 things:
1/ the path repeatedly snaps back to the origin (Annoying).
2/ the path extends vertically top to bottom off the artboard causing ‘cannot preview’ issue. Although this is fixed with an undo and selecting view using GPU/CPU. (Really Annoying).
3/ Illustrator hangs and becomes unresponsive (basically hammers my system resources) and I have to force quit or it just crashes. (Ridiculously Annoying).
Please accept my sincere apology for the inconvenience. Please get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html . Since this is not a generic issue that we can reproduce at our end, we will need someone to look into your machine to figure out what is going on here.
Thanks & Regards,