v12 stores functions and variables in HISTORY. I need my functions, you fak, but i don't care about all these things i calculated like FEW DAYS ago!
v12 is MESSY! v11 is one .exe file which runs in one instance only, no matter what. v12 is... my taskbar is filled with calculators sometimes.
Also i kinda like independence of input field font and font of answers in v11. It's propably a bug, but i'd call it a feature.
v12 is super cool, functions, complex numbers and stuff is AMAZING, but it's just UNUSABLE for me!