I can't go back to 3.25 and check, but I'm 99% certain they stealth nerfed Master Surgeon. Or, some idiot backported life flask behavior from PoE2.
You can no longer enable a life flask at full life with Master Surgeon enabled. This is the assumed default behavior in PoE2. And I'm pretty sure I wouldn't have played Mamba Pathfinder and made an AHK macro if that was the case in 3.25. The macro wouldn't have worked because it's dependent on duration and being able to enable the flask every X seconds.
Someone forgot to put a suffix on his life flask....nevermind.