In short - Since IntelliJ 2025.1 we use so-called K2 mode
https://blog.jetbrains.com/idea/2025/04/the-story-behind-k2-mode-and-how-it-works/
(There is an option to switch back to K1 though)
We are aware of some missed intentions and inspections in K2 in comparison to K1 and brought another huge part of missed in K2 actions in 2025.2 and will finish the migration with 2025.3 (hopefully).
Your feedback helps us to adjust priorities for different migration tasks - you can create an issue for the plugin
https://kotl.in/plugin-issue or just share here (or in DM) what have you missed.