Locator can't find some test files

I'm trying to get the QML files here to show up in Creator's locator. The relevant CMakeLists.txt:

https://code.qt.io/cgit/qt/qtdeclarative.git/tree/tests/auto/quickcontrols2/controls/basic/CMakeLists.txt

Typing tst_button and f tst_button gives no results, whereas it should show tst_button.qml.

Another potentially related issue: f tst_basic should result in tst_basic.cpp, but it gives no results. Typing just tst_basic works as expected.