This is a continuation of QTBUG-89155

I've backported the fix from the mentioned issue and the code stopped crashing there, but if we modify the code to this:

QFontDatabase::addApplicationFont("EmojiOneColor-SVGinOT.ttf");
auto image = QImage(256, 256, QImage::Format_ARGB32_Premultiplied);
const auto string = QString() + QChar(8205) + QChar(9794) + QChar(65039);
auto p = QPainter(&image);
p.setFont(QFont("Emoji One Color"));
p.drawText(QRect(0, 0, 20, 20), string);

With "EmojiOneColor-SVGinOT.ttf" file being in the app folder (so it could load the font) crashes in text layout (we replaced "drawText(0, 0" to "drawText(QRect(0, 0, 20, 20)" to force text layout).