Very simple issue: Split with Lines does not appear to be working for me in QGIS 3.24.

[![enter image description here][1]][1]

My line and polygon are in the same CRS, you can see that they completely intersect. But when I get the results, the polygon is unspilt (the layer has a single polygon). Very confused.

A similar post at https://gis.stackexchange.com/questions/332075 suggests dissolving, but this does not work.


  [1]: https://i.sstatic.net/Xz6O0.png
  [2]: https://gis.stackexchange.com/questions/332075/qgis-split-with-lines-does-not-fully-work