It sounds like it isn't a bug.
I had the same problem where it locked into the oil mode (max temp) if you press the buttons in a certain way. I also remember that the way to change it on/off wasn't written in the manual and I had to find out how to do it in some random reddit post from years ago. I also clearly remember thinking that I had to send it back until I looked around online for that info. It did feel like it was broken - like an electrical bug - as you describe.
Honestly, I don't even know how they get away with selling this vape? See my previous posts, here in this discussion, where I clearly describe (with photos) how mine quite literally fell apart in front of my very eyes over a period of 6 months - and I treated it like gold.
It is, in my opinion, a ridiculously high priced piece of junk that shouldn't be sold to anyone.
(link here:
https://fuckcombustion.com/threads/boundless-tera.25309/page-129) scroll down.
If you spend more than $20 on this thing - you've been cheated.
If anyone's curious - the Vivant Alternate (which I championed before in that post) also stopped really working properly after around 6 months of use. The heating chambers just turn weak and lose most of the power - they're now also packed away (two of them) and not in use anymore.
I can't mention what I am using now as we can't mention them here. (it's actually a bit of a hybrid with an og cooling unit that's been modified to fit - and seems to be working - but it's only been two months so we'll have to just wait and see)
I am also pleased to say that the Flowermate Aura 'still' works just fine after many years - in terms of longevity, this one outclasses them all so far - but it's a pen style vape and doesn't give that "big satisfying hit" you get from something a lot bigger. But it certainly does the job
The only snag? It's doubled in price in the last 3 - 4 years for no discernible reason? I remember paying around $40 - $50 for mine - but now you won't find one cheaper than around $80 or $90. I don't feel it's worth that amount (for what you're getting) and it's a real shame they jacked up the price so much. But, given that the vape market is all about overpriced vapes at extortionate prices, I'm also not surprised. They're just following the trend... I say all of the above as someone who has spent a small fortune on dry herb vapes and currently has a big box of broken ones.