According to the Patch Notes 1.05 on Reddit, the update addressed the following issues:
Corrected a specific blackout error occurring for players on the Steam version of the game. File: NARUTO TO BORUTO SHINOBI STRIKER v1.05.zi...
Improved overall network stability for both PlayStation 4 and Steam platforms. Context and Release According to the Patch Notes 1
Implemented fixes for specific causes of system crashes on Xbox One . File: NARUTO TO BORUTO SHINOBI STRIKER v1.05.zi...
Fixed a bug where the game would freeze while attempting to access player data.