the answer appears to be "it displays it horizontally anyway"
Does it work inside a toot itself:
test ᠴᠣᠷᠢ ᠶᠢᠨ ᠭᠠᠭᠴᠠ ᠪᠣᠰᠤᠭᠠ ᠪᠢᠴᠢᠭ᠄ ᠮᠣᠩᠭ
@lizardsquid and mouse wheels go sideways
@lizardsquid w'e'd probably end up with portrait orientated screens
@pup_hime yeah!
::<