Based on comments and reports, it is wise to delay downloading this new update due to new errors and bugs being introduced that can mess up your game or play.
For me, the configuration for camera blur, doesn't actually deal with the problem so much as acts as a bandage. If there are scenes that use camera blur, disabling it could take away from the creators intended visual storytelling that help the player understand what is going on.
When in a dungeon or zone, a locked chest would cause the screen to turn blurry. It is bugged after recent updates, so it remains blurry until you leave the zone or dungeon.
It didn't always be this way, so I am wondering what update was the cause. Because, really, just removing the camera or screen blur from locked chests seems simple enough without removing it entirely.