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kotlinlang

I've read <https://blog.jetbrains.com/kotlin/2023/02/k2-kotlin-2-0/>, but I'm still a bit confused. What makes Kotlin 2.0 different from Kotlin 1.9? Is this only about K2 frontend? If so, testing `1.9.21` with K2 enabled (with `kotlin.experimental.tryK2=true`) should give me the same kind of problems as with `2.0.0-Beta2`? I'm asking because it doesn't seem to be the case - my project works fine with 1.9.21 + K2, but I have many different problems with 2.0-betas.

K2 is continuing to evolve. The differences you’re observing might be because of this:
&gt; In addition, tons of long-standing bugs have been fixed and, inevitably, some of those fixes might break code that accidentally relied on incorrect compiler behavior.