bug: editor not compatible with IE11

[punctos]

Hi team, We decided to use mjml in grapes js. Everything works fine except on IE11 and Edge. Most of our customers are on IE11. On IE11 we have:

On Edge we have

Do you have a chance to correct the problems? Thank you for your comeback.

[kickbk]

This has to do with strict code and those browsers. I started rewriting some of the functions, but to get this completely redone is crazy amount of work. It's not difficult or impossible to fix, just tedious. If you do fix it, please do share your code with the rest of us.

[tdejong-tools4ever]

Edge appears to be fixed, still occurs in IE11