As far as I can tell, this hasn't been covered before, but it seems like a big, if simple, issue. In Fusion 360 at the moment, when making drawings from a part, dimensions are truncated to remove any trailing zeros, regardless of what the precision is set to. A diameter of 3.500" becomes 3.5" without any way to restore the remaining decimal places. Many companies, however, specify a default tolerance for a drawing, based on how many decimal places are specified in a dimension. That 3.500" diameter might have a default tolerance of +/- .005" where the 3.5" diameter could be +/- .1" by default. This common practice saves you from having to specify tolerances on every single dimension, especially when specifying complex, tight-tolerance parts. The title block typically spells out these defaults as ".xx = +/- .01, .xxx = +/- .005" and so on.
Please, for the sanity of engineers and machinists everywhere, stop truncating dimensions in the drawing environment of Fusion 360.