FYI, Most of this hotfix went out last week on 6/18, but didn't include notes. The Frozen Harbor fixes are new as of this morning's update that included Creator Bundle 2. We're sharing these today in the Steam patchnotes section for clarity on the latest changes:

Changed the button that saves the Stick Calibration setting from A to Start.
The top bar that displays the progress of a BO3 or BO5 set can now be enabled in Offline Versus.
Implemented a tentative fix for a rare crash on Metal Refinery stage.
Fixed Match History not updating anymore for some people.
Fixed boot issues caused by the shader cache loading process after a GPU driver update.
Stage and Item Changes
Frozen Harbor's walls will no longer get stuck if someone bounces off of them while they're rising.
Frozen Harbor's walls' visuals now match the collision.
Crystal Valley's bottom blastzone moved downward.
Armada Fleet: All platforms count as hard ground and restore ALL resources, not just some of them (e.g. you didn't get Kragg pillar back when landing on the starting ship).
Caelan Orb now goes away on death.