Operating system: Win 7
Java version: Version 8 Build 241
Minecraft version: 1.15.2
Baritone version: Latest release.
Forge mods (if used): N/A

Exception, error or [logs]

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How to reproduce

Step 1 #sel ca a large ( in this case 128x128 ) area
Step 2 #sel f the area with a block( in this case "black concrete powder" )
Step 3 realize it has left numerous holes. That even after the fact are "unfill-able" according to the bot.

Modified settings

allowDownward (true)
allowInventory (true)
breakFromAbove (true)
freeLook (false)
rightClickSpeed (2)

Final checklist

• I know how to properly use check boxes
• I have included the version of Minecraft I'm running, baritone's version and forge mods (if used).
• I have included logs, exceptions and / or steps to reproduce the issue.
• I have not used any OwO's or UwU's in this issue.

Send the log.