Some blocks duplicate themselves upwards (10 blocks) when being updated

I am having an issue where blocks are being duplicated upwards when updated. The behavior is a little unpredictable. Sometimes when blocks are updated, they immediately show up. Other times, I need to reconnect to the server to see them. The upward duplicating blocks seems to replace any existing block in their path. It also seems to copy any walls behind the block. I had a devastating chest casualty caused by a campfire duplicating itself upward during my play through.

TShock version: v4.4.0-pre12
Hosted on local network using this docker image: https://hub.docker.com/r/ryshe/terraria

Reproduction steps (if applicable)?

Here is a list of things that have caused this issue for me:

Placing pylons
Placing/toggling campfires
Placing/toggling water candles
Clentaminating (sometimes)
Flowers growing on grass

Any screenshots?

(Needed a third party to upload a WEBM) https://imgur.com/a/bwlkLot

Any log messages from files that end in `.log` or `.txt`? What are the last 100 log messages from the server console?

This is the output from a fresh restart and placing down one pylon and reconnecting. server-output.txt (Apologies in advance for any inappropriate names in the server log)

What plugins and what versions of those plugins are you running?

No plugins.

Pryaxis / TShock