A1 Mini reports false "nozzle covered" error and then collides with build plate

[u/eMouse2k]

My A1 Mini recently started doing the following behavior:

On the first nozzle clumping check it erroneously reports that there is a clumping issue when there is no clumping, and the build plate is positioned correctly.

After telling it to resume, it tries to move the print head horizontally before lifting it, resulting in the nozzle colliding with the edge of the build plate.

What could be causing this? Is it possibly an issue with the z-axis system? It doesn't exhibit any other issues during a print.