Since updating to Alpha12, I have weird errors showing up in my IDE. Several composables like

Text

and

Scaffold

show up with red underline, and the problem says:

'Text( ... ) Unit' is only available since Kotlin 1.4.30 and cannot be used in Kotlin 1.4

First, I have my project set to use Kotlin 1.4.30, so ... what? Also, despite the "error", the project compiles and runs fine ... what gives?

Sounds like you're not using the Kotlin 1.4.30 plugin https://kotlinlang.slack.com/archives/CJLTWPH7S/p1612984407135300?thread_ts=1612982100.129800&cid=CJLTWPH7S

ha! I was in the middle of restarting the IDE after updating the plugin version when you posted. Indeed that takes care of the problem! Thanks!