First of I'd like to say I really enjoy this game. The combat feels very nice although as the community has found there is quite a few bugs in the game. I would say this is expected with a new release.
That being said, here is what I have experienced with two bosses so far.

I am playing on Steam for the record.

I have developed a technique with the dwarf where I will use the stomp to knock down enemies, I found this was possible to use against bosses in some cases making the fights more manageable. When I used the stomp during an attempt versus Stonegrinder, the stomp knocked the boss backwards into the object behind him. (The object was a ballista or wagon of sorts.) Stonegrinder fell into the object itself and when the boss attempted to get back up he was instantly deleted. Stonegrinder had almost full health when this happened.

This also happened in the boss fight where there is a Warlock/Mage type boss and a tank/shield wielding boss. (I don't remember the bosses names)

I knocked down one of the bosses with the dwarf stomp and the boss fell into one of the blockades, instantly deleting the boss.

Here is a link to the Stonegrinder event.
https://www.twitch.tv/fishpaste_tv/clip/MoistCreativeParrotMau5-0lMh5UjH-9Jf-nOC?filter=clips&range=all&sort=time

I wasn't able to get any footage for the Magic User/Shield Wielder fight because I didn't even notice it happened until after the fact. I am certain the boss was stuck in an object because this fight happened after Stonegrinder and the boss also had close to full HP at the time.

I want to say again how much I am enjoying this game regardless of the current state. I believe the dev team will work to fix this bugs and am not worried in the slightest. The way I see the game in its current state is an era of the game that will be phased out due to future patches, so currently I enjoy trying to do things that was not intended as well as game progression.

For old bugs still around:

Enemies attack damage is applied to player before the animation even indicates an enemy has attacked.
Enemies now randomly appearing.
Lag spikes when interacting with objects or creatures spawn in.
Disconnecting after missions, this has been addressed three times now and everytime some fix has come out for it the disconnection issue has gotten worse. It used to only occur with 1 member of our group as party leader, after 1.03 we disconnected randomly with any person as party leader off an on, switching off who was lead seemed to help. Now its every mission every time we disconnect.
Button inputs still being read incorrectly or not at all. Try to initiate a team attack and blow a cooldown instead.
Try and use Breuners heal, blow his stomp instead or vice versa.
Cattie brie try and use the aoe arrow, and Cattie just jumps instead.
Party Management option vanishes only fix is to reboot the game
Lag on pause screen
Lag on character sheet.
Return to camp fails repeatedly when in a boss fight, stuck in a loop if your party gets downed.

Icewind specific Bugs.
All of Icewinds' attacks are causing damage to players outside of their areas of effect.
Icewinds Bite attack will strike players at her left or right toward the front, as well as players at her hindlegs.
Icewinds front claw slams will strike players at Her hind legs and under her tail.
Icewinds Ice breath will damage players outside the cone of effect, and like with other enemy attacks player will take damage before the animation has even begun.

I don't think this is a bug so much as an oversite on the arena or fight mechanics, but if a player is at range and all people in melee range are down, Icewind will chain cast her icebreath with no breaks in between causing an instant loss. This is especially a problem when there is only a party of 2.
The Icebreath either needs a cooldown between uses, or Icewind needs to be able to do more than stand in one spot to enable other actions to be taken, this is a huge oversite by the development team.

New Bugs affecting bosses and small enemies:
Status effects are not applying off and on, I would use anb ability with wulfgar that inflicts burning status after enough stacks apply, but my weapon also has necrotic to curse. The stacks would hit the top of the meter to apply the debuff but instead one or none will apply and the stacks will vanish instead. this issue occurs on and off. To verify this wasn't an issue of only 1 thing should apply at a time, I did but basic attacks to curse and the same issue occurred regardless of only applying the one.

Suggestion:
Start providing patch notes for what it is you are exactly changing. I keep seeing the posts but the results lead me to believe nobody is really trying to fix anything.

Quality of Life change: add in an interaction selection tool. I had a party member downed near a ladder, and people kept climbing up and down ladders trying to revive the one party member.
This happened repeatedly

1. I encountered this issue on Xbox
2. I was playing solo and co-op
3. I was playing as Bruenor

I started a new character and was on the first level and both times i played it I got stuck while killing a verbeeg giant. While on co-op (2nd time on the level) all team members had to die in order to reset the level. Afterwards I wasn't stuck but when we finished the act I receive only 1 attribute point and it was the one I got in game. I never leveled up. We all had new characters also.

This never happened until the newest update.

It was also in a custom friends only game I hosted.