[0.18.21] Player-placed tiles duplicate themselves under feet near out-of-map

[Honktown]

Reproduction: Have an out-of-map area (see note 1), and tiles like refined concrete. Stand against the out-of-map tiles, and place refined concrete nearby. Refined concrete appears under feet and you can walk out onto a bridge of refined concrete hovering over out-of-map.

Vanilla save file:

out-of-map bug.zip

(1.07 MiB) Downloaded 72 times

Starting image:

starting.jpg (307.11 KiB) Viewed 1120 times

After:

after.jpg (304.11 KiB) Viewed 1120 times

Note 1: Command used to make the out-of-map zone

Console Command

/c

local offset_x = 0
local offset_y = -32

local tiles = {}

for x = -16, 16 do
for y = -16, 16 do
table.insert(tiles, {name = "out-of-map", position = {x = offset_x + x, y = offset_y + y}})
end
end

game.player.surface.set_tiles(tiles)

[Honktown]

Sorry, didn't see this is a "duplicate" related to water tiles already.

[judos]

And that was this issue I think:
viewtopic.php?f=47&t=84185&p=491426&hil ... te#p491426