There seems to be a new rounding bug introduced in 0.99.6671 that was not there in 0.99.6670. When you write an equation and then hit equals, the rounding (decimals) set in the options box is no longer adhered to.
https://en.smath.info/forum/yaf_postsm47797_-SS-3532--Custome-Postfix-Operator.aspx#post47797