Hi Mattias Rundberg,
Thanks for your feedback, I'm happy that you can solve the issue with all community effort. :)
Special Thanks to Tiago Simões and Miguel Vicente, they are not involved in this thread of comments, but they have been working on this subject for so long and after business hours ;)
This week, José Pedro Proença and I will work together on a component to deploy in Forge with some scripts for some Outsystems UI widgets could work on IE.
The component will not work for all widgets, like progress bar, flip content, Dropdown Tags, LightBoxImage etc... But you can have a Minimum Viable Product for IE.
Cheers,
Luís