The new flow control mode in 4.2.0+ version is pretty nice, but it breaks some useful functionality for some brushes.
I'm talking about using flow in masked brush - in old formula using flow for brush mask with subtract mode allowed to control the amount of wiping off the paint effect. Now with new creamy flow mode, the subtract mask won't allow for continuous wiping of paint anymore.

Example on my brush (R_sh_c_dirtspotty from Shapesia pack) - old flow behavior


with new flow mode


The new one isn't as useful as the old one for this brush.

My suggestion is to include flow mode changeable for individual brushes instead of global setting.