Seems like customContextFile, customClientContextFile options doesn't work

[sverdlov]

I've tried provide custom files, but no success. I copied client.html to my project root and provided config like that

module.exports = function (config) {
    config.set({
        ...
        customClientContextFile: 'client.html'
    });
};

but it get's file from lib. I tried to do some debug, logs in config.js before return shows it gets path correct initialy

karma/lib/config.js

Line 269 in 50f9635

return config

but then here it uses lib default file

karma/lib/middleware/karma.js

Line 75 in 50f9635

const customContextFile = injector.get('config.customContextFile')

Maybe I did something wrong?