Stop automatically resizing windows on Tahoe (26.6.2) on MacBook Air (15") connected to 2 External Monitor Displays and when resizing using external mouse.

I use the 3rd party app Stay to memorize my window sizes and positions based on different monitors being attached or removed.

https://cordlessdog.com/stay/

I typically have 3 displays. The Macbook Pro and 2 external 4K displays. Stay always puts my windows back exactly where I want them.

I can have Stay memorize with external monitors, and without, so I can take my Macbook Pro to other locations.

I can even have Stay memorize a different set of external monitors.

You don't say which external monitors but AFAIK at least Dell's software has an option to do such window resizings so check your 3rd party apps.

I think I see what you mean. I do not often drag windows around, but there does seem to be a change.

I have seen it with different displays (older 1080p and maybe 1600x1050 monitors by Samsung), so I don't think the actual brand or size of display is the problem.

In some cases this change may be beneficial, like when dragging a window that just about fills a screen (not fullscreen, though, just under the menu bar) to another display, it seems to adjust its size to match the other display.

But it is annoying if you just want to move a window around and it changes its size on its own.

For my use case, Option-click the green button at the top left is a godsend. It resets the window to its maximal size, under the menu bar. Of course it does not help if you use a custom sized window and it changes.

sumant-id wrote:

Sorry, I am a minimalist with my laptop and apps I need and use and don't want to use any 3rd party apps or utilities.

I got tired of finding my windows moved or resized when I wake my Mac.

Some releases of macOS did better, than others, however, a new update would revert to bad behavior.

I have my window position and sizes the way I want them, and do not like having to put them back. Hence my use of Stay.

I just got tired of fighting a loosing cause.

NOTE: I have been using a fixed window size/position desktop arrangement since I got my first VAXstation back in the late 80’s. I do appreciate it when the operating system leaves things where you left them, and does not tiddy up for you.

@Luis Sequeria1

Yes, the Windows self re-size even though I have the all the Windows settings turned off under 'Desktop & Dock'

• When I click on the title bar of an app to move the window
• When if I try to resize the window from a corner (which itself is more painful now, but learn that the mouse has to be held a bit further from the corner due the hidden curve edges on Windows now with glass display)

@Luis

Yes, Window size is changing on their own (it is like the Tile & Snap feature snap that Microsoft had introduced long time back and MacOS also adopted later.

This happens when I am working on my Mac and I want to resize and move Windows around in a monitor.

1. Laptop connected to two (2) 27" external monitors and I use external Apple Magic Keyboard and a LogiTech Mouse (M720) (Laptop itself has lid shut and the laptop screen is not used)
2. I have multiple windows open on each of the two monitors (e.g. iMessage, Email, Slack on one and the other Finder, Spreadsheet, Presentation, Browser etc.)
3. Within one of monitors, if I want to expand the Window size of one of apps (e.g. iMessage) to make the Window smaller, I use my Mouse to click on the corners....This is when the Window starts resizing on one....sometimes fills full screen (as soon as I have single click on Title bar), or somtime it fill full horizontal width and just 1/3rd or of the vertical screen etc. I am no longer able to seamless just click on any corner of the Window and resize it to the custom size I want the Window to be in.

(to see the various screen sizes the windows get (randomly) resized two, hover mouse over the green full screen button on the top left of any Window)

LG Monitors....I had checked their setting just to confirm and they don't have any options. No App either.

All used to work great...this issue started happening only within the last 6 months or so after upgrade to MacOS....previously the same setup worked seamlessly.

Maybe we are looking at this all wrong (Note, I am speculating here).

What if every time macOS detects a hardware configuration change, it drops an “Event” into each running app’s Event Queue, and it is each application that is making poor window size/position decisions?

That might explain some of the randomness.

Again just speculating 🤔

I am not sure exactly what you are saying.

Are windows changing on their own, with you moving or resizing? And that happens while you are working or after your mac waking from sleep or restarting?

Sorry, I am a minimalist with my laptop and apps I need and use and don't want to use any 3rd party apps or utilities.