The documentation is misleading because it mentions that IE 9 and above are supported. However, if the user happens to have compatibility mode on, these browsers will not allow the user to login at all. It might be more accurate to claim that IE 9 and higher are supported only under specific conditions, but that would essentially be akin to not supporting IE 9 and higher. Not supporting IE at all is a major oversight because most corporate environments use IE.
The decision to disallow the user to login for fear of a degraded user experience seems drastic and misguided. Our users want to see data that is available. The degraded experience when using d3 graphics isn't important because we don't even use d3 graphics to begin with.
It doesn't make sense, because the user not being able to login (and thus having no functionality) is far worse than the user being able to login and having a degraded experience (thus having reduced functionality).
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