'Hashtag' oddness

Went, yesterday, to a screening of Frank which, unbeknownst to me, had the audio-impairment subtitles (which are, themselves, actually visually impairing; but no matter).

1) Frank, the character, an experimentalist musician/psychiatric patient, wears a big fibreglass head, and so has to narrate his real facial expressions so that folks have at least some sort of idea what he's feeling. This turns his utterances into kind of Twitter-speak: "I think that's a really great idea big enthusiastic grin", e.g.

2) Jon, the keyboardist/social media guru for the outfit, is forever updating his blog, posting messages to festival websites, or indeed Tweeting. But even though most of these ping up - in the correct format - on the big screen, whenever he is speaking-as-he-types the subtitles project the word 'hashtag', per se.

#itsthelittlethings