Yeah, but frankly in 2020, I don't care about IE. Moreover, IE is no more supported by QS so it's really not a big deal. It's even a good reason to get rid of this dinosaure 😉
For the map chart, I know, I have demonstrated that to my customers. However, the idea is to have the ability to use svg everywhere we can use matricial image (e.g. : thumbnail of an application)
There was a turnaround with an extension (not for everything, only to display a picture in the dashboard.. not for thumbnails or icon) . Seems it doesn't work with the last QS versions : https://github.com/brianwmunz/svgReader-QlikSense/issues/49