Every time I start Obsidian, the window size increases by a few pixels.
How does it work in your environment?
"Vaults folder ID".json in %APPDATA%\obsidian folder
If you check this, you will see that the “width” and “height” values increase every time Obsidian exits.
The problem occurs when the window is not maximized.
Here’s what the environment looks like
Obsidian 0.13.19 / Windows 11 Build 22000.376