Here are the patch notes from the Brawl Stars reddit:
Brawl Stars Optional Update Patch Notes
Brawl Pass UX improvements
Quests have been divided into categories (Daily, Season, Event) and timers have been added
Quest icons in Event Selection are now shortcut buttons to the Quest log
Brawler Menu now has a Quest filter button which sorts Brawlers with Quests to the top of the Brawler list
Brawl Pass now has shortcut buttons to navigate between rewards and milestones inside the track
Brawl Pass now remembers the previously viewed tab when accessed through the main Brawl Pass button
Brawl Pass Exclusive Quests are now highlighted for Premium Pass owners
Brawl Pass Exclusive Quests have been moved to the end of the list for Free Pass players
Gem counter is now visible in the Brawl Pass screen
Local notifications for Quests becoming available have been added
Bug fixes
Fixed an issue which caused missing Brawler names and health numbers during battle
When the Brawl Pass was released, I decided I was going to take Brawl Stars seriously. I’ve climbed to 5,000 trophy points and have mastered the art of waiting in a bush as Bull.
The Quest season gave me a reason to really grind and get better at the game, which may be why I have become so addicted.
Everything would be awesome in Brawl Stars land if it wasn’t for this pesky bug that would cause health on Brawlers and crates to display improperly or not at all.
I can’t tell you how many times I lost a match because I couldn’t tell how much damage I needed to inflict to win the trade.
This update fixes that bug, finally displaying the correct amount of health on everything. Now when I lose games, I have to blame myself and not the wonky controls.
Overall, Brawl Stars over the past month has been an awesome game and I understand why players get so addicted to their phones.