Cannot calculate units/values anymore in the "canvas size" dialog in beta 27.4 m.3383

Since time immemorial it was possible to calculate units in the unit fileds. e.g. in the canvas size dialog (option-command-C) if the original size was 1024 px horizontal. I could enter "1024*2" and the new size 2048 would be calculated automatically. Same with unit conversions by the way (in to cm to point etc.). Now the dialog only accepts numbers as input, but not "*" "+" "/" etc. To me this is a major regression, please fix / bring back the old functonality.