If any Diablo 4 players run into this problem, their best bet is to open the map, click on the dungeon's entrance, and choose to leave. They should then be able to re-enter the dungeon and complete it like normal, barring any other unforeseen issues. This isn't totally ideal as it means walking back through the dungeon, some of Diablo 4 Items which can be fairly large, but it's better than completely losing one's progress. This fix will have to do until Blizzard issues a Diablo 4 update that addresses the root of the problem.
Blizzard has not confirmed any concrete plans to correct this problem, but fans can count on Diablo 4 receiving new updates on a regular basis. Diablo 4 is a live service game with years of seasonal content planned, and so hopefully the many updates that are released for the game fix some of its lingering problems.
Diablo 4 players aren't happy with the Vulnerable status effect, believing the game's itemization would be better off without it. As opposed to the conventional value of investing in Critical Strike stats, Diablo 4 has several "buckets" for players to chase, and Vulnerable Damage is the biggest and most important bucket by far. Though Diablo 4 has issues with its itemization that go beyond the Vulnerable attribute, its effects trickle down and affect other aspects of the game such as player builds.
As it stands, all five Diablo 4 classes benefit tremendously from having a bonus to Vulnerable damage. However, not all abilities (or builds) can reliably produce the Vulnerable status effect on enemies. Sorcerers in Diablo 4 immensely struggle in this regard, as Ice spells are the sole Vulnerable generators for the entire class, forcing even Lighting and Fire-based Sorcerers to invest and rely on Frost Nova to deal any reasonable amount of damage.
The dislike for Vulnerable Damage has gotten so high that TheTrueAlCapwn submitted a thread on the Diablo 4 subreddit, and was met with near-universal support calling for their removal. Whereas Critical Strike and Attack Speed are still valuable in Diablo 4, the big advantage they have over Vulnerable Damage is that they're universal (as opposed to situational), and their effect on a build extends beyond being just a numbers boost. By contrast, many players consider Vulnerable to be a boring stat, as it seems to solely dictate the viability of one's gear.
One of the comments posted by mtv921 depicts Vulnerable as a much more interesting attribute, where instead of providing a huge damage increase, it would provide different bonuses for each Diablo 4 class. Sorcerers could have a high Lucky Hit Chance versus Vulnerable enemies, Rogues could have Armor Penetration, and Barbarians could have Damage Reduction or Thorns. Compared to the more inspired aspects of Diablo 4's combat, Vulnerable Damage sticks out like a sore thumb, and the community doesn't feel it's good enough to justify its existence.
Build diversity has been one of the biggest strengths of Reaper of Souls in recent years, and so long as Vulnerable Damage continues to pigeonhole players into certain skills, Diablo 4 classes will struggle to offer the same level of variety. The ability to guarantee the Vulnerable status on enemies trivializes the other spells of their category, as seems to be the case with Bone Spear for Necromancer and Puncture for Rogues. Though Season of the Malignant in Diablo 4 will not fix the issues that players have with Vulnerable Damage, the developers have shown a willingness to listen to the community. Fans can hope that their feedback will be heard sooner or later.
A Diablo 4 developer gave a funny response when a fan asked for option to turn off the game's PvP. While Diablo 4 doesn't have a dedicated single-player mode, players can tackle all aspects of the game by themselves. For those who don't want to embark on a lone wolf journey, Diablo 4 also has different ways for players to interact with each other.
Diablo 4 offers the option to play co-op and explore Sanctuary with friends. Playing Diablo 4 in co-op brings benefits like trading items, extra hands to clear areas, and creating builds in synergy with party partners. Another form of multiplayer interaction in Diablo 4 is to enter PvP to buy Diablo 4 materials hunt other players, survive their hunt, and get powerful items. In PvP, Diablo 4 players can get powerful rewards and Seeds of Hatred to convert into Red Dust and purchase special items.