[0.18.9] UI issues with new blueprint window and large blueprints

[triffid_hunter]

The old window would zoom out to show the whole blueprint - not great with large ones, but less problematic than cutting them off.

The new window seems to cut them off if they're too large.

Ideally, we can scroll and zoom in the blueprint preview, so we can easily adjust which entities are included even if the blueprint is enormous.

Default view - right side cut off

screenshot-20200229-031705.png (446.47 KiB) Viewed 603 times

View when window is moved over to see right side of blueprint.

screenshot-20200229-031714.png (358.23 KiB) Viewed 603 times