How is this still not fixed?

THIS IS KILLING ME. And it's got to be a bug as the constrain lock works fine for the resize by percentage tool just to the right of it, but for typing in an exact measurement (which I use more frequently) it turns back off alll the time.

The Constrain Proportions lock is a vital element of any designers day. We need to be able to lock it and have it stay on AND then unlock it and have it stay off until reengaged. LIKE IT DID.

This is a real issue day to day, every time you go to resize anything it turns back off again - image, pasted vector, box, doesn't matter what it is, making accidentally disproportionately scaling a live vector or box/frame too easy to do. It has messed up projects for me about 200 times a day!

If rolling back to v25 files were easier to open in 24 i'd roll back but alas half our studio was already on 25 and saving files before we realised the issues and they're not easily translatable without exporting idml (which isn't feasible to ask people to do for every file every day).

Ozzie starting a new bug thread isn't gonna get it fixed any quicker mate go here and vote on this (if you haven't already):

https://indesign.uservoice.com/forums/601180-adobe-indesign-bugs/suggestions/48982412-indesign-2025-won-t-lock-constrain-proportions

I have just downloaded ID 20.0.1 and the auto-constrain still isn't fixed. This is a big issue for the type of work I do. In previous versions, once auto-constrain was selected it stayed selected until you switched it off. With ID 2025 you have to switch it back on every time you select a new item. Nightmare. I will be using ID 2024 until this is fixed.

Just came back to see if the release of 20.0.1 has meant someone might be looking at this from Adobe. C'mon guys get on this already!

FFS!!! Fix this!

PLEASE fix this - its adding so much design time to have to click the constrain proportions lock again EVERY time I resize a box by entering a number in the top control panel up top. In the space of 5 mins I probably click that thing 20 times now, as it constantly turns back off. It adds up over a 12hr design day!!

I should add to this, I cannot remember the default behaviour previously but this could be a useful clue as to identifying the erroneous code. Each of the three locations above (Control, Transform & Properties Panel) each exhibit independent behaviour regarding the setting of these locks, where both Constrain proportions for width & height and the Constrain proportions for scaling are not updated and reflected in the other panels. This is not the case for the reference point and the other transformation settings such as flip rotate etc. where when you adjust one they all change in the other panels.

Also this is not a Graphics/Images/Assets issue as it has been logged. It is a Performance/Usability & UI issue

In both the Control Bar and the Properties panel, this was previously a toggle setting and you'd check it and forget. Now every object every once applied to one, as soon as you deselect the object, the setting resets. Not only that, and possibly related, my transform panel doesn't include the lock alongside the dimensions at all, it is only visible alongside the scale. The scale one seems to be able to remember it's setting, so this is clearly a bug.

Possibly on an unconnected yet related note, resizing via entry of dimensions is ignoring the 'Adjust Stroke Weight when Scaling' option, but is honoured when scaling via percentage. This means I need to either work out the scale factor, or adjust manually by dragging while holding Shift and Control. Not ideal!

Windows 11 system here.

This problem is driving me mad. I've been looking but it seems there is no solution anywhere.

UPDATE: Tried resetting InDesign preferences, logging out of creative cloud and back in, multiple restarts, tried the 20.1 beta update and nothing seems to fix this issue. If I open my older version of InDesign 2024 (v19.5) it's working. I tried exporting user settings from that version then importing to 2025 version but it gives me an error dialogue 'Incompatible locale detected. Please choose a valid file to proceed.' - No solution so far.

So definitely an issue with the 2025 update and clearly not one they plan to resolve fast.

THIS IS KILLING ME. The Constrain Proportions lock is a vital element of any designers day. We need to be able to lock it and have it stay on then unlock it and have it stay off until reengaged. LIKE IT DID.

I've hunted around the settings to see if it's an option to set it back how it used to be and I can't find anything. Please help this has messed up projects for me about 200 times a day!

Every time you go to resize anything it turns back off again - image, pasted vector, box, doesn't matter what it is. But then very occasionally it will lock for one box but not for any others.

This unlocking every time means extra time/clicks for everything you touch, and you can easily accidentally disproportionately resize something when not using shift and drag method. e.g. I always paste in vector logos instead of linking to the vector which doesn't always clip the frame in tightly/adds time getting the frame right so you can align them. I almost always leave my constrain proportions lock ON. Before, I would just type a width and press enter, or use the up arrow while holding shift on width or height to bump it by 10's. With the lock turning off again all the time, I have to add a step to every single time I resize something and if it's a vector I can't tell if I forgot to click that lock again before doing so. If it's an image, and I forget to re-click lock proportions before typing a new size I can check the percent figures and see if width or height is different. If it's a vector I can't tell unless I really butcher the proportions so its adding a ton of time but also almost guaranteeing human error at some point.

It was SO handy before to turn it off + have it stay off for multiple tasks where you didn't need it locked, then turn it back on and have it stay on.

I assumed this was an error but we're now a week on from the update and it's still not yet fixed. HELP US!

I'm on a Mac Studio M1 Max 64GB Ram on Sequoia 15.0.1 running InDesign 2025 (20.0)

Kindly bring back the old feature for constraining the proportions of width and height. It should remain constrained unless I change it. I prefer it that way. BTW, I've been using InDesign since its very first version. Thanks :D