In mobile VE, we render a fake selection for these nodes rather than a "native" selection, because a native selection causes the touch keyboard to pop up on mobile devices. The lack of native selection means that keyboard shortcuts that operate on text selection won't work (and this is a low priority issue for actual mobile devices, because they are not often used with a hardware keyboard, and the touch keyboard doesn't have these keys/shortcuts).

This may be a duplicate of T101113? (At least, that task explains some more context.)