Is there a glitch in Technobabylon with Giel van der Waal's hand?

Spoiler warning for Technobabylon chapter 3. Requesting if at all possible that answers and comments are as spoiler-free as possible for anywhere beyond the situation described.

So I've reached chapter 3 in the new Wadjet Eye adventure Technobabylon, the scene in the apartment of Giel van der Waal. I need to unlock his terminal to get details on the frozen synth. The terminal has two required unlocks: the password which is easy to guess, and the biometric.

I'm encountering what seems like a glitch when trying to use his severed hand (eww) to unlock the biometric. I've got the cooking gel out of the cupboard and applied it to the hand: this produces the promising comment "the hand becomes noticeably warmer". However, it still doesn't unlock the biometric; the right-click comment still says "Giel van der Waal's cold, dead hand"; and the cooking gel gives no right-click description comment, and repeating the operation of combining the gel and the hand gives no comment whatsoever. I wondered if I was just missing some other step to do to the hand, but Lao's hint on the topic suggests we need to warm up the hand, or possibly give it a pulse. I can't use the Jolt Gun or any other inventory items to make it twitch, I can't get the food machine to warm it up, and I can't use the gel on the terminal screen directly.

I'm nervous to Google too much about this because I'd really rather avoid spoilers if at all possible (though I've seen no relevant hits for "Technobabylon glitch"; but it is a very new game).

So my questions are:

1. Am I just missing some further interaction I need to do, beyond applying thermal gel to the hand? If so then a simple "Yes" along with perhaps a small or vague hint would be great.
2. If not, and it is meant to work applying the gel to the hand then the hand to the terminal, does anyone know a way to avoid the bug? I've tried relating from before I opened the apartment door and got the same result.