Comment 3 for bug 370137

Regarding the 'visual bounding boxes for bitmap export' issue: this fix is explained in bug reports about cut-off shadows (blur filter) and clipping masks like:
Bug #204820 in Inkscape: “clipping when exporting bitmap”
Bug #209832 in Inkscape: “exporting objects with blur makes them cut”
Bug #317846 in Inkscape: “Export selection or drawing to bitmap, cuts of any blurred/feathered objects.”

If you really need bitmap export with geometric bounding box selection for your technical drawings, you might consider to add a comment to the 'Blueprint: “Geometric & Tech Drawing”': <https://blueprints.launchpad.net/inkscape/+spec/tech-drawing> or to file a separate (wishlist) bug report with a mockup for an enhanced 'Export Bitmap…' dialog.

hth, ~suv