Incremental compilation fails for class extending trait with export

[pikinier20]

Compiler version

3.0.0-RC1

Minimized code

First, we compile this code:

class SomeOps:
    def someOperation: String = "asd"
    // def someOperation2: String = "asd"
        
trait SomeTrait:
    object SomeOps extends SomeOps()
    export SomeOps._
    
class MainClass extends SomeTrait:
    def a(str: String): String = someOperation

Then, we change SomeOps:

class SomeOps:
        def someOperation: String = "asd"
        def someOperation2: String = "asd"

And use someOperation2 in MainClass

class MainClass extends SomeTrait:
    def a(str: String): String = someOperation2

When we try to compile that code now, it fails. After sbt clean it compiles.

Output

[error] -- [E006] Not Found Error: /home/fzybala/scala3bench/scala3/src/main/scala/MainClass.scala:4:33 
[error] 4 |    def a(str: String): String = someOperation2
[error]   |                                 ^^^^^^^^^^^^^^
[error]   |                                 Not found: someOperation2
[error] one error found
[error] one error found
[error] (Compile / compileIncremental) Compilation failed
[error] Total time: 0 s, completed 22 mar 2021, 14:31:45

Expectation

This code is correct and compiles after cleaning outputs

[ckipp01]

Note that trying this with 3.2.2 I m no longer seeing this issue. With that being said, even trying with 3.0.0-RC1 I'm unable to reproduce using sbt 1.8.2. Any change you can still reproduce this @pikinier20? If note I'd vote we go ahead and close this.