I hope the mouse/window thing is hyperbolic flair for your story, if not ouch that's expensive.
And yes in many ways they get the rules wrong and for no apparent reason. Like they reduced the range of pretty much every spell, firebolt should have a range of 120' and do 1D10, here its 60' and does 1d6. This is especially stupid as other damaging cantrips come with riders of some kind. Like chill touch one of my favorites does 1d8 range 60' but people hit by it can't heal for the next round making it a great anti regen spell.
The hex spell on the warlock has a duration of 1 hour at level spells it can get up to all day as a level 5 spell, it just ends once combat is over.
Some things I get like the wood elfs hide in nature ability(can't remember its name) if basically allows the elf to hide in natural terrain with less obscurement than is usually necessary. That would be hard to program so they just give the elf the stealth skill for free. As an aside the whole you need cover/concealment rules to hide in D&D I've always thought were dumb, its like they act like no one has ever snuck up behind them before. Just make a general statement the DM may determine that stealth is impossible in some situations.
While these are imps, I think they are fake imps as 2 1st level characters have no business fighting a pack of them. And the cambions showing up in that one fight is just retarded, hey the die rolls fucked you for 4 rounds straight at level 1, you die.
They give a nice big die roll animation for out of combat tests I want one for in combat. Because I don't think they are using a d20 for that. I've had it say you have a 95% chance to hit. There is no reason I'd have advantage, I'm +5 to hit from my proficiency bonus and attribute so unless their AC is 6 or 7 that makes no sense. In fact I think they may have ditched the while adv/disadvantage mechanic and just applied flat bonuses and penalties. And the die rolls seem broken, I've critically fumbled 3 times in a row way too many times for it to seem a legit random die roll.
I got it pretty much so I could play the into before it got spoiled so often I was unable to avoid it. So I'm not disappointed as I think a lot of this will shake out in development. My issue or worry is too many Larion fanboys are playing it and not enough D&D players. The forums are just packed with people who give excuses for everything. But the entire point of the early access is for them to receive feedback, so they can correct. As an aside they apparently are starting with the evil NPCs joining your party in early access as they felt those would need the most feedback to get to work.