Improved Endless transition on lower difficulties: Runs starting on all lower difficulty levels now have a smoother progression into Endless Mode. For example, you’ll no longer jump from a 5k payment directly to 100k at Level 0.
Fixed an issue where the “savings frozen” warning could appear outside of boss encounters at Round 10 on lower difficulties in Endless Mode.
PATCH 1.1.5
Source: Steam Community (opens in a new tab)