The bug shows up like this:
TypeError: fc.value$default_ruhk1_k$ is not a function
at TestEFCurve.protoOf.testConstantExpression_4i11z6(orx/orx-fcurve/src/commonTest/kotlin/TestEFCurve.kt:59)
at <global>.fn(kotlin/orx-orx-fcurve-test.js:121)
at Context.<anonymous>(orx/build/js/node_modules/kotlin-web-helpers/src/KotlinTestTeamCityConsoleAdapter.ts:72)
at <global>.processImmediate(node:internal/timers:478)