This happened in 2024 too.

This link (second one down, first event is missing control rods in Texas...) has almost the exact same wording as the article.

https://www.nrc.gov/reading-rm/doc-collections/event-status/...

I found the root cause of the older issue on LinkedIn of all places.

https://www.linkedin.com/posts/robert-meyer-8672ab4a_st-luci...

Root cause of 2024 was apparently a procedural issue combined with electrical failure of the control rod grippers.