Major Scarlet & Violet Bug Crashes Game During Final Boss Fight

A major bug causes Scarlet & Violet to crash during the final Paradise Protection Protocol boss battle.
It happens when Koraidon/Miraidon is registered and you hover over slots 4-6 in your party.
Solutions are to battle with 1-3 Pokemon or scroll up to the Legendary slot.
The bug was introduced in the recent 2.0.1 update.
Game Freak has not addressed this issue yet.

dexerto.com

Relevant topic timeline:

9/17/2023

Trainer Shares Trick to Find Rare Authentic Polteageist in Pokemon Scarlet & Violet Mass Outbreaks

A Pokemon Scarlet & Violet trainer has shared a helpful tip for finding guaranteed encounters with the rare authentic Poltchageist form, which involves completing the Pokedex and resetting Mass Outbreaks through date and time settings.

9/20/2023

Pokemon Scarlet and Violet to Get Major Bug-Fixing Update in October

A new update for Pokemon Scarlet and Violet, version 2.0.2, is expected to address minor bugs that may hinder progression and interaction with Pokemon Home, including issues with recording victories against trainers and bringing special Pokemon from Pokemon GO to Pokemon HOME.

10/2/2023

Pokemon Scarlet and Violet Players Experience Crash Bug During Final Boss Fight After Latest Update

Players of Pokemon Scarlet and Pokemon Violet are encountering a bug where the games can crash during the final boss battle, requiring a potential update to fix the issue.

10/8/2023

Pokemon Scarlet & Violet Launches with Subpar Graphics, Dividing Fans on Whether It Impacts the Experience

Pokemon Scarlet & Violet players are divided on whether the game's poor performance and graphical quality affect the overall experience, with some arguing that graphics are not the most important aspect of a game and others contending that it can diminish the gameplay and exploration.

10/10/2023

Shiny Riolu's Final Gambit Move Frustrates Pokemon Scarlet & Violet Players During Shiny Hunts

Players of Pokemon Scarlet & Violet have discovered a way to counter the troublesome move Final Gambit that Riolu uses, making it easier to catch the elusive shiny version.

10/12/2023

Pokémon Scarlet & Violet Update 2.0.2 Fixes NPC Battle Bug, Adds Pokémon GO Transfer

Pokémon Scarlet & Violet has released a new update, version 2.0.2, which includes bug fixes such as recording victories against NPC trainers and enabling transfers of special Pokémon from Pokémon HOME.

10/13/2023

Pokemon Scarlet & Violet Update Introduces New Bugs Instead of Fixing Existing Ones

Patch 2.0.2 of Pokemon Scarlet & Violet was intended to fix bugs, but instead introduced new game-breaking issues, leading players to criticize the lack of quality control from Gamefreak.

10/12/2023

Pokemon Scarlet and Violet Update Fixes Teal Mask DLC, Trainer Battle, and Pokemon Home Transfer Bugs

The Pokemon Scarlet & Violet 2.0.2 update fixes major bugs, resolves Pokemon Home issues, and includes other select bug fixes.