How to pan as I start to draw annotations without losing drawn marking(area/linear)

I want to draw annotations along with panning without losing drawn part. I know I can use space bar while drawing annotations but that drawn part is lost as soon as I hit spacebar (tool changes to pan).
But my needs were like if I start to draw annotations and if it is close to the border of webviewer then it should automatically pan without losing current drawn area/perimeter.

Let me know how to implement this.

Hi there,

Currently we do not support this functionality, and we do not really have an easy way to implement it unfortunately.

I will add it to our backlog and we may implement it in the future.

Sorry about that!