The Close button(x mark) and the title do not follow the actually sidebar width.
Adaptive width based on sidebar, and the x mark should always be placed like .frame(maxWidth: .infinity, alignment: .trailing).
Version 0.99.132-beta (WebKit 621.1.2.111.4) Build date Mar 17 2025 MacBook Pro (macOS Sequoia 15.4 build 24E246)
Sequoia (15)