What may be causing my map to sometimes rotates 180 degrees during operation?

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Sometimes, while mapping or even while in Localization mode the entire map rotates 180 degrees like this:

This wreaks havoc with navigation because now every point on the map has new coordinates. If it was currently navigating to a point on the map, the point is now often off of the map.

Background: I am using an RPLIDAR A3, ROS Melodic, and Slam Toolbox.

I presume something in my ROS configuration is wrong, but I'm not sure where to start debugging this.

Here is a link to the bag file running in the gif: https://www.dropbox.com/s/r2jc6tylgjf...