We’re using Prodigy to annotate visually rich document layouts and occasionally encounter problems with bounding boxes that are drawn on the edge of the image.
Because bounding boxes are selected using the labels, some bounding boxes cannot be selected at all, because their label is not visible.
This is simply a bad design decision: I understand that labels are useful for overlapping bounding boxes, but there should be a separate select tool in addition to polygons, rectangles and freehand drawing. (As a sidenote, a point dropper tool would be equally great!).
Are the bounding box labels not visible because they're outside the image, or because they overlap with other labels, making them hard to click? In theory, the labels should always render within the image (just like bounding boxes), and the labels themselves shouldn't overlap. Could you share a screenshot of the problematic layout? Thanks!
In any case, you should be able to select a bounding box by clicking on any area of that bounding box with the SHIFT key held down. In other words, SHIFT enables selection mode so that your cursor acts as a sort of point dropper tool.
See here for more details.