Invisible proxy icon (AKA window title icon)

[ilyagr]

Steps to reproduce

Start without MacVim running.

1. open -a MacVim file.md. mvim file.md also works the same (I have a symlink to mvim in my PATH).
2. Observe the lack of the proxy icon.

Actually, the proxy icon still works if you know where to start dragging, but it is invisible.

Workaround (further adventure)

3. Go to appearance settings

4. Check "Hidden title bar" and uncheck it again
5. The proxy icon is visible now.

Expected behaviour

The proxy icon should be visible regardless.

Version of Vim and architecture

MacVim r180, Vim 9.1.727, ARM, on

Environment

Sonoma 14.7

I'm using the dark theme for it. Somewhere in Apple's Settings, I also selected the option to make it show the proxy icons without having to click on the title first. Update: I mean the "Apple Settings -> Display -> Show window title icons" option.

How MacVim was installed

From GitHub

Logs and stack traces

No response

Vim configuration where issue is reproducable

No response

Issue has been tested with given configuration

• [ ] by running MacVim.app from GUI macOS interface
• [X] by running vim/gvim/etc installed by MacVim
• [ ] by running other versions of vim (e.g. /usr/bin/vim)

Issue has been tested with no configuration

• [X] by running mvim --clean (or gvim, supplied by MacVim distribution)
• [ ] by running vim --clean (in terminal, supplied by MacVim distribution)
• [ ] by running vim --clean (in terminal, other suppliers, e.g. /usr/bin/vim)

Other conditions

• [ ] The both Homebrew packages "vim" and "macvim" are installed