Scaling proportionally with Shift no longer works as expected in InDesign 2025 (v20.5 on macOS 26.0)

I don't think this behavior has changed. I just tested this to make sure I am right.

OS 13.7.8 (Ventura)

InDesign 2024 (19.5.5) and InDesign 2025 (20.5)

Dragging the corner with no other keys selected resizes the frame non-proportionally, but not the content (unless you have "auto-fit" selected).

Shift-drag resizes the frame proportionally, but does not resize the content

Command+Shift-drag resizes the frame and the content

Maybe it has something to do with the new macOS? I can't test that. I'm not brave enough to move beyond Ventura, where everything is working 🙂

This is a long shot, I know, but this is how Photoshop works:

Now, proportions are kept by default, and pressing Shift breaks them.

No chance you were working in Photoshop and didn't recognize it? 

~Barb

Can't reproduce it. Try these general troubleshooting steps:

https://www.rockymountaintraining.com/adobe-indesign-rebuilding-preferences-cache/

Plus, this issue can be caused not only by antivirus but by some random 3rd-party apps. Try to start your Mac in safe mode - will it make a difference: 

https://support.apple.com/en-ca/guide/mac-help/mh21245/mac

On pc try ctrl+shift, on Mac Cmnd+shift