@hroncok what happens if there is no snowman in sight, but you have a space character followed by the code point FE0F (which you can enter as <ctrl><shift>u all at once and you get a funny u then fe0f and <enter>).
A crash.
Ok, so the snowman has melted out of the problem, it seems to be (at least) space followed by variant-16 in @hroncok's fonts.