v16.2.0 64 bit, windows 8, creative cloud, all updates installed
Ok... not a newbie as I've used Illustrator since ver1. Also been software beta tester for various software companies, so good at finding bugs but this one is bugging me Image may be NSFW.
Clik here to view.... I've done searches and found many similar posts, but none have a solid fix, and though my testing is not always reproducible.
Thru my testing seems the only way the artboards export properly is when you make a new document... those artboards always export properly.
Sometimes when you click artboard tool and draw a artboard manually it sometimes works properly, but not always.
When you resize by the transform toolbar or by the transform dialog box, it will always make the export improper size... sometimes only in one dimension size and not both, sometimes in both
Ive tried all the various tips people have mentioned in other posts, cleared prefs, tried with & without constrain proportions, align pixel
Artboards set with 0 bleed. & use to dealing with artboard exports by the 100's on a daily usage... so this is relativaly a new problem
'Save for web' exports properly to artboard size, but I'm dealing with multiple artboards and using the export command with "Use Artboards"
So for testing I resized all artboards down 1 pixel then exported, and it exported at the size I resized to... so thought to resize them back to the size I needed, and the problem came back... very odd bug and not anything I try is consistent... well besides consistently a thorn in my side since I'm needing pixel perfect exports.