Factorio Forums

If one takes a small blueprint or ghost (1~2 tiles wide) and tries to drag place the blueprint while moving, the ghosts are only placed once every 2-10 tiles, rather than every tile.

I suspect that this is because the player moves more than one tile/tick while in map view.

The only case for which building gap is prevented is when building a single entities by dragging, it is not applied for whole blueprints for couple of reasons.

The bug report mentions ghost building not just blueprints.

Here is a video demonstrating the issue (ghost building from the map included):

I've forgotten to mention this also applies to manually placed entities if the cursor moves very quickly: especially at low UPS.