Explore Working Copy can't find explorer.exe

[bszonye]

I've just installed git-for-windows on Windows 11. When I use "Repository / Explore Working Copy" from the menu, it fails with this error message:

explorer.exe not found in PATH
explorer.exe not found in PATH
    while executing
"throw {NOT-FOUND} "$cmd not found in PATH""
    (procedure "sanitize_command_line" line 8)
    invoked from within
"sanitize_command_line $args $i"
    (procedure "exec" line 13)
    invoked from within
"exec explorer.exe {C:\Users\bradd\git\bones} &"
    ("eval" body line 1)
    invoked from within
"eval exec $explorer [list [file nativename $_gitworktree]] &"
    (procedure "do_explore" line 4)
    invoked from within
"do_explore"
    (menu invoke)

Running explorer.exe from the Git Bash command line works fine.

I can't find any mention of this error online, so it's possible that there's something wrong with my installation. Are there any logs or configuration files that I can check for more information?