Cannot enter <1 fractional parameter as a proper fraction without a whole number prefix

[AeroNib]

When working with fractional units, you can enter fractional expressions into the parameters window, but only when part of a mixed fraction. For example, entering 1 3/4 (with a space in between) evaluates to 1.75". However, entering just 3/4 causes the Parameters window to reformat the expression as a full on math expression: ( 3 / 4 ) * 1 in.

It appears that the Parameters window recognizes a mixed fraction as a numerical measurement, but when it sees a proper fraction without a whole number preceding it, it tries to turn it into a mathematical expression.

Expected behavior: Entering parameter expression 3/4 yields 3/4" and evaluates to 0.75

Actual Behavior: Entering parameter expression 3/4 yields ( 3 / 4 ) * 1 in or entering 3/4" throws error.

Workaround: Enter fractions <1 as a mixed fraction, e.g. enter 0 3/4 (with a space in between)

See attached screencast for a demonstration.

I'm running Fusion 360 version 2.0.9313 on Windows 10 build 19041

[jhackney1972]

If entering 3/4 changes to (3/4)*1" gives you the correct value what is the problem.  The parameter table is just doing the unit control for you.  Since you are entering unitless numbers with a "/" between them it has to adjust the units.  I do not see the issue.

[AeroNib]

It works, but it's an unexpected behavior and seems to be a bug nonetheless. Explicitly including the unit causes it to pop up an error and reject the input. Not including the unit and entering just a simple fraction (no leading whole number) behaves differently than entering a mixed fraction, which should not be the case for intuitive user input.

It appears to recognize mixed fractions as a measurement input, but it does not recognize proper fractions <1 as a measurement input, so the Parameters window either reformats it unexpectedly or throws the error if including a unit since it's not expecting the unit on a mathematical expression.