Now it seems that appliacation window width dimension limit is something like 34% of the screen width. However with Focus Mode enabled, it could be less beacause of no UI, thus enabling a use case of a sidebar of some sort (like for note-taking apps).
Ideally, I would like the non-Focus-Mode window to be able to be smaller in width also.
orion still needs UI to display with focus mode enabled (e.g., cmd+l to display the address bar), and it's already buggy when the user sets the window width to the narrowest possible. on my machine(16" MBP), orion's narrowest window width is 26-27% to screen. could you share some more info like what mac are you testing on?
1VbBoIlR9XB3dFKh Macbook Air M2.
In Chrome there is a way to open a webpage as a separate window with no UI and it can be even 5% screen width and I often use that. That’s what I am comparing to 
macieksmola Can you add screenshots of chrome and orion in minimal width?
Sure
Prompt for Chrome without UI:
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --new-window --app=https://orionfeedback.org
macieksmola Compared to Orion?
Vlad Sorry, I meant Orion when typing Onyx on the screenshot ^^ (been working with Onyx app lately) 
