I've changed my mind - I think the main problem is actually legitimate players, not "players who make multiple rail blueprints with different choices of alignment point". Fix a grid size and suppose we have a free choice of alignment point. There are 4 classes of blueprint according to whe...

I was about to file an 'is this a bug?' then found this thread. For rail blueprints the game is happy to have an absolute reference point at any of the four positions in a 2x2 rail tile (choose e.g. grid sizes of 6x6, 6x8, 8x6, 8x8) so I suspect there's already some sneaky plus-one fixes going on to...

Looks fixed in 0.18.39.

Set a toolbelt slot to any item not present in your inventory, e.g. a boiler. Start building a boiler While the boiler is building, hold down the left mouse button on the boiler slot Finish building the boiler, release mouse button, drop boiler ghost with Q Left-click the filter slot Expected: you ...