Steps to Reproduce
- Open Molecules canvas (clean canvas)
- Press Fullscreen mode button (window got expanded to fullscreen - ok)
- Switch to Macromolecules canvas
- Check
Fullscreen mode button state
Actual behavior
Fullscreen mode button state indicates it in window screen mode. If you press it - nothing happens. If pressed one more time - system turns to window screen mode

Expected behavior
Fullscreen mode button state indicates it in window screen mode. If you press it - system turns to window screen mode

Related issue: #1273
Environment details:
- Ketcher Version 3.14.0-rc.1 Build at 2026-03-02; 15:11:42
- Indigo Version 1.42.0-rc.1.0-g7b8e9cfc9-wasm32-wasm-clang-19.0.0
- Chrome Version 146.0.7680.72 (Official Build) (64-bit)
- Win11