$UnixSeparators()$ does not handle string from $FilePathRelativeToProjectRoot$ anymore

Before v2024 I used this combination of macroses $UnixSeparators($FilePathRelativeToProjectRoot$)$ for External Tools: tests, fixers, etc.

I am working on Windows 10 WSL2 Ubuntu.

Starting from 2024 version PHPStorm does not transform windows' slashes to the unix's ones. So result now looks this way:

docker-compose exec php bin/php-cs-fixer fix path\to\file.php

So that the script cannot be executed anymore. 

How that could be fixed?