We have tests for things like that certain types of text changes don't cause too many recompositions. Those tests pass when sending commands through the IME command code path, but fail when going through the semantics code path. The semantics code path is very different than IME: we just directly invoke the onValueChanged callback.

This is an opportunity for other bugs as well – internal state can get out of sync because one way of mutating it updates internal state directly, and the other asks the composition to update our state on the next frame.

Semantics actions should go through the same code paths as IME commands, or as close as possible.

For example, the TextFieldTests.textField_stringOverload_doesNotCallOnValueChange_whenCompositionUpdatesOnly test fails if text clearance is performed via the SetText action instead of IME commands. They should behave the same.