Right click on the value and a drop down list will appear for you to choose from...
As to why it changed? All I can say is after a decade of complaining about unusual, un-requested changes such as this it's still happening...
So I simply grin and bare it as it's not a priority...
Also note that it now actually has two values that can be fast toggled. I'm sorry I can't give that instruction as it's never seemed to work right fir me so I must be doing something wrong...
Maybe someone else will add this info here?