Bukkit

What steps will reproduce the problem?
1. Get a ton of Airstrikes (32+) in your hotbar, spam the throw button to use them all. Any airstrike will do, as long as it resembles the default somewhat.
2. Once the lag subsides, fly out of the distance where chunks are loaded, wander around and you will see the blocks.

What happened?
I replicated the steps above, and found out that when large amounts of airstrikes lag the server, falling sand entities are launched out of the chunk render distance, and land as the block they were textured as.

What was supposed to happen?
No blocks were supposed to be placed

What version of CrackShot are you using?
Version: 0.98.5

What version of CraftBukkit/Spigot are you using?
Current version is Spigot 1.7.9-R0.3, however the problem also occurs on CraftBukkit 1.7.9-R0.2

Were there any errors in the console? If so, what were they?
No errors were present
.
Please provide your configuration file if necessary.
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I can confirm this can be happen too. I think this is because physics of blocks has been changed since 1.8 or something so falling blocks can be affected to push the direction of explosions. Crackshot did not push the blocks of airstrike at 1.7.x so this was not a thing. I just reduced the number of bombs on all of my airstrikes and this has been rarely happening since.