With multiple runs of "enb make" without changes in project enb rebuilds every tech in project.
[email protected] mac os = cache works
enb@latest mac os = cache works
[email protected] win = cache doesn't work
enb@latest win = cache doesn't work

All experiments made on https://github.com/bem/project-stub with parameters:
? Enter your project name: project-stub
? Enter a name of the project owner: Ivan Ivanov
? Enter an email of the project owner: [email protected]
? Choose a toolkit to build the project: ENB
? Specify additional libraries if needed: bem-components
? Do you want to use design of 'bem-components' library? No
? Choose redefinition levels to use: desktop
? Choose technologies to be used in the project: BEMJSON, browser.js
? Choose a template engine: BH
? Do you want to build static HTML? Yes
? Do you want to build 'tidy' HTML? Yes
? Choose types of files to be minimized: css, js

I determined that cache in method build (in any tech) on windows always have invalid cache. More precisely cache stores with one key and loads with another (i mean keys in tmp/cache.js):

module.exports = {
"project-stub/desktop.bundlesindex/index.levels": { ... },
...
"project-stub/desktop.bundles\index/index.levels": { ... },
};