Unicode "medium black circle" in QML causes crashes on Android

I've created a minimal test case which illustrates this. Basically, when putting the ⚫ character (Unicode "medium black circle") in the text property of a QtQuick Text item, your app will crash intermittently on Android. The QML file is encoded in UTF-8 (this apparently is the only encoding allowed for QML, at least as far as I can tell by web search). The crash happens whether the string is plain or uses qsTr(). I've also tested some other non-ASCII Unicode characters which don't seem to cause a crash.

The backtraces I have gotten from the crashes are not at all consistent with each other.