[Custom Input Masks] Mask not working in email

It simply doesn't work in any emails that i am working on in my project, but it works just well in other parts of the project. Is it an acknowledged problem?

There could be two things

1. You should check if the input field type is "Email", if it is "Email" change it to "Text".
2. Have compared with the performance their email input on the example page? Download the demo page and compare with your screen.