Crocotile uses nw.js , and it seems like there is a problem with Windows Defender incorrectly diagnosing apps that use nw.js. A lot of programs use nw.js so maybe some other programs are influencing how windows defender judges any app that uses nw.js
Here is a post on the nw.js website that reports the issue: https://github.com/nwjs/nw.js/issues/8090
I've also tried to contact microsoft about it. Hopefully they can fix the issue with windows defender.