@inthehands @Catfish_Man well, on 64b Apple platforms. On 32b they’re 12B (holding 8 utf8 units, or 10 but non-contiguous if code was built with an older Swift version and inlined), and on Android 64b they hold 14 instead of 15 utf8 units because of memory coloring. There may be other platform-specific oddities I’m forgetting.