Illustrator 24.1 metric precision broken
So there was a new release Illustrator 24.1 the other day which I installed. Unfortunately, it looks like the engineers messed up and semi-broke the conversion routines from inches or whatever measurement is used internally to the metric units displayed to me as the user.
What used to be displayed as nice whole numbers or up to a maximum of three decimals, is now never an even number and always displayed with four decimals. Just to take an example, a dimension clearly intended to be precisely 10 mm is now displayed as say 9.9998 mm or 10.0003 mm.
This is incredibly annoying for me and anyone else who usually works by numerically setting exact dimensions and coordinates. This also seem to affect other parts of the software like the PathFinder and join command. Objects where the coordinates should match now doesn't, generating several unnecessary anchor points or paths in the process.
Please fix ASAP!
I am happy to share that we have fixed this bug in our latest release – 24.2.0 which is available worldwide now.
Going forward, our goal is to fix as many top User-Voice bugs as possible and as frequently as possible. Given the nature of the fixes, some of the bugs will take a longer time to fix, but we are on it.
You can update to the latest release using Creative Cloud desktop App: https://helpx.adobe.com/in/creative-cloud/help/creative-cloud-updates.html
Thank you for all the feedback. Keep it coming!
Not fixed on OSX 10.15.6, Illustrator 24.3. Place an object at a specific point in a document by keying in a whole number in the Transform panel or the Control panel -- eg put item at x = 2p6, y = 18p6 -- it will move it to 2p6.0001 x 18p6. Snap to pixel is off. This problem with precision is not new; it only goes away for some updates.
Yve Ice commented
It's a kind of sad funny, that a big company like adobe can't fix this truly. It feels like that they are working around the bug, instead of fixing the problem.
They should look at Blender. There is no calculation from one unit to the other internal causing such problems. You just give the units the common name of your local area like inches or centimeters or pixels and so on. Only in the moment when you export your work in other file-formats unit will be converted. A very easy and clean solution for such a problem.
Also, we are on 64-bit systems those days. With the old IEEE-754 (1989) float and double we can have significant digits between 6 and 17. So how can it be in the year 2020, that adobe does't find a way to make here software work correct and accurate on 3-5 significant digits?
Long-Time users like me, sometimes wish back to the time of CS2, when the problems were still bearable.
Justin Tang commented
JMF basically summed up my exact thoughts on this issue. I'm keeping my fingers crossed in hopes of it being resolved in the next release.
I posted this on the community forum and it was recommended that I share it here as well. Following are my comments in full. Issue definitely not fixed in 24.2.1.
I just upgraded to Illustrator 24.2.1 a few days ago and have had issues with my Keyboard Increment settings and Transform palette measurements ever since.
I've seen several others questions here and elsewhere regarding how Illustrator will round off artboard sizes (x.375 becomes x.38 etc) but this is quite the opposite problem.
I usually work in picas and, since the dawn of time, my Keyboard Increment setting in General preferences has been 0p1. Now it keeps defaulting to 0p0.9996. Ditto for the measurements that show up in my Transform palette. If I reposition something or make a size adjustment, either with arrow keys or specifically typing what I want, it changes my specs.
Say I have a box that is at 15p0 on the Y axis. If I nudge it down, it goes as follows: 15p > 15p0.9996 > 15p2.0004 > 15p3 > 15p3.9996 and so on.
I know that my end results are not going to be visibly different to the naked eye. But it's a problem for my general workflow. I gave a nice clear example with easy numbers but it's more disorienting when numbers are randomized and, for example, maybe I'm just trying to look at two items quickly and see if they're the same.
What happened with Illustrator? Is there a way to get back some "normal" settings? I'm a print designer and, even if I'm making dielines, my work is not critical to the ten-thousandth decimal.
David Jones commented
This very clearly still isn't fixed on 24.2.1.
I have 24.20 and am still having this issue. It doesn't matter what unit I'm working with (inches, mm, etc)
Casper de Bruin commented
With the release of 24.2 the previous bugs, new document and corner radius decimals are fixed. Still having a issue with the move tool. See attachment
The issue hasn't been fixed in 24.2 release.
All vertical/horizontal lines including guides appear as 0.0001px/pt in width/height.
See also line width/height becomes "0.0001 px"
I also found this problem recently. It seems that the problem is more serious in the legacy ""File New"" . It's too troublesome to have to be manually modified every time.
Round corners shows also decimal places
Create a rectangle 100X100 px
Round corners to the maximum. Value shows: 49,9999 px
Previous versions: 50 px