Hi Egor,

Thank you for responding. Yes, this is correct. If I navigate to files from within Illustrator's "Open..." menu (or Recent), and if the Illustrator window is already resized, then the opening project appears to respect the window size.

However, opening Illustrator by itself, without opening a project, will always open Illustrator full-screen as indicated above and must be resized before proceeding to open an existing project.

Can't believe it has been this way since I started using Illustrator (CS3) and still has not been fixed. Honestly it's kind of a big ****-you to all graphic designers who use AI at this point, it's been an issue for so long.

Chris, am I correct saying this happens when you open the files from the Explorer, but doesn’t if you use File > Open or Recent?

Illustrator 28.5
Windows 11 - 23H2
5120x1440 @ 240Hz

I'm using an ultrawide monitor (Samsung Odyssey Neo G9). Every time I open Illustrator fresh or open an existing project, even with other projects already open, my window resizes to the full width of my monitor.

This happens regardless of whether I've already got a project open and my window is resized to only one half of my screen. As soon as I open an additional project, Illustrator opens full width.

I have tried the steps provided by Anshul Saini in this post (https://community.adobe.com/t5/illustrator-discussions/illustrator-minimize-resize-its-window-after-opening-a-file/m-p/14366219) but it does not work.

I have tried resizing my window and then creating a New Workspace. This also did not work.

It doesn't matter if I'm opening Illustrator fresh or if I've already got multiple projects open.

It does not "Maximize" Illustrator, Illustrator is still a floating window. However it's just shy of my monitor's full resolution. It's very aggravating when trying to work, especially when I'm going through and updating multiple projects during the day, that I have to constantly drag my window to one side of my screen or snap it to one side.

i had to file for depress leave at work for 2 years now

such an impressive feature that no one ever desired

My little nephew is 9 he is learning computer programming at his school for very smart kids. He made a computer program the other day and I was genuinely surprised that this little boy is smarter than all of Adobe, Inc. combined! His program did not resize its window unless I did it intentionally. Wow! Maybe I can give you guys his contact info?

I can't believe this hasn't been fixed by Adobe yet. If you, too, are struggling with this long-lasting issue, please create an account and sign in to actually VOTE that this issue is Critical. Thanks in advance.

please help this sucks

ʰᵃˢ ᵗʰⁱˢ ᵇᵉᵉⁿ ᶠⁱˣᵉᵈ? ⁱ ʰᵃᵛᵉ ᵇᵉᵉⁿ ᵗʳʸⁱⁿᵍ ᵗᵒ ᵗʸᵖᵉ ᵛᵉʳʸ ˢᵐᵃˡˡ ᵗᵒ ˢᵉᵉ ⁱᶠ ᵗʰᵃᵗ ˢᵒˡᵛᵉˢ ᵗʰᵉ ᵖʳᵒᵇˡᵉᵐ, ᵇᵘᵗ ᵃˡᵃˢ ᵐʸ ʷⁱⁿᵈᵒʷ ʳᵉˢⁱᶻⁱⁿᵍ ʷᵒᵉˢ ᵖᵉʳˢⁱˢᵗ

Just got back from the organ donation center, ready to pay another Creative Cloud monthly subscription fee. Should cover the cost of fixing this, right?

Please help, every time Illustrator arbitrarily resizes the window on file open it partially obscures the picture of my beautiful family on my desktop and because I have issues with object permanence every time this happens I fear they have all disappeared from this earth and it causes me great distress and mental anguish

This is the only computer application ever made that has this issue. Would be impressive if it wasn't extremely annoying. Please fix

Another horrific issue in addition to the (now again) solved GPU acceleration.

Window size changes when opening files, some panels are closed as a result and the main toolbar is resized...

Please fix that !

Yeah, everyday i have the same problem very annoying. It also refuse to open file.

yes, happens here everyday, really annoying. Please fix this.

Please Adobe, this bug is well over a decade old now.
Having to manually resize the window all the time is just so annoying and the occasional error when the window is "too small" to open a file is infuriating.

when i open a file the illustrator window will minimize, not a huge issue but annoying nevertheless

This has been a problem for a decade, it's asinine that anyone is paying what Adobe charges when they refuse to address something this basic.