Maintain width and Height Proportions bug
This has been a bug for at least a version or two: draw a shape, go to transform it in the Properties panel, and even though the "Maintain width and Height Properties" icon indicates "not constrained", adjusting one of the dimensions adjusts the other proportionally. This seems to happen only in a fresh file (perhaps fresh launch of Illustrator), and once I click and unclick the Constrain button once, it doesn't recur in that session.
So in the screen grab above, I draw a box freehand, then in the Properties panel, begin adjusting the height with my arrow keys. You can see the icon to the right indicating width and height are not locked together, but still, as I adjust the height, the width changes in proportion.
Note also that once I click that icon to specify "Constrain," then unclick it back again, now I can adjust the two parameters independently. And from then on in the file, the bug doesn't recur.
Thank you for bringing this issue. The team will be looking into it.
Trần Phan Quý Lưu commented
I fixed it by restarting the machine. Open a new AI file, click in the height box, press Ctrl and Shift and scroll. Then exit, enter the drawing file and it works normally again
Please make sure it also works when you hold the alt key (for tenths of units increments). This is where it always fails now, regardless of whether you have locked and unlocked before.
Not fixed in v25.3. Screen recording attached. See Egor's comment for steps.
Egor Chistyakov commented
Please anybody check this for me:
1. Select an object
2. Disable Constrain Proportions
3. Put cursor in a Width or Height field (Control or Transform or Properties)
4. Press Ctrl+Up/Down arrow (to change by a fraction: 0.1px or 0.5mm, depending on units)
Should change only this value, but the other get changed too, as if the Constrain is on.
This has not been fixed. Plus, the arrow up and arrow down increments start reversing as well in the transform palette after some time. This is ultra-annoying. This has been in the product for five years. Please fix this.
Thanks so much!
Derek S. commented
+1 this issue still occurs in 24.3
This still happens in 24.2.1
Yes, this bug was fixed and is now back again. :^(
This was *never* fixed. Let me be more precise:- it was never fixed for cases where you hold the cmd-key (on macOS) to increment by a tenth of a unit. It will always increment both values.
This used to be possible but has been broken for at least 5 years now.
It may have been fixed in 23.1 release but is now again doing the same thing in 24.1.1 release. Would it be possible to correct this opportunity on all new releases going forward?
Looks like a bug in the Properties panel specifically. Does not affect the Control bar though.
Testing: After having constrained proportions *turned on* at shut-down of existing session: open illustrator, create new document and make sure the control bar and the properties panel are both visible. The ‘constrain porportions’ chainlinks button will show as selected/turned on in the control bar but not in the properties panel. Properties panel will behave according to the setting in the control bar.
I never noticed because I don't use the properties panel for anything, since it's always been a complete garbage waste of screen real estate.
Alan Dowell commented
Seems to be a problem one way only. If you lock proportions, and enter a figure and press enter, works fine. While you still have AI Open, if you open a new file or existing file, still works fine (proportion still locked, so it is not file specific). If you "exit" / "close" Illustrator, and open AI, either from a file directly or Creative Cloud, it show unlocked, but it is not. You have to click twice on the icon to reset it to unlocked. Ugh.
Jordan Luft commented
Same problem, we shouldn't have to use a work-around, it should just work the way it's supposed to. Adobe, please fix.
Hi, I have the same problem. Locking and unlocking the values helped - thanks for the tip!
May I add that there is a bug with adjusting values when a modifier key is used? If one of the unlocked dimensions of an object is incremented via arrow up and cmd is held to increment by 1/10 of a pixel, BOTH values are incremented, just as if the lock was engaged.
I still have this problem. It can cause me to order the wrong size of glass windows! Very annouing. Can this please be solved.
Have same problem.
I have the same problem
Adam Josefus commented
Have the same problem
Have the same problem - just found out it screwed one of my jobs in print!
1. draw a rectangle
2. resize one side in properties panel (constrain icon is off)
3. it changes both dimensions as if constrain is enabled
I consider this a major bug and obviously it created a problem for me when I did not notice it during size adjustment. Luckily it was only a small job - I just fear to imagine if I screwed up something bigger because of this Illustrator bug. It seems interesting that more people are not talking about this.
I thought I'm paying for a professional software.