Power BI Service issue in Internet Explorer

[ZLJ]

Hi, Power BI Service is displaying correctly for me in Chrome.  However, when I access it using Internet Explorer I often have issues.

The Navigation Pane button (three little dashes in the top left) is not visible, and all the Menu icon on the top right are hidden too.  They are there, just not showing, so i can click on the blank black space and it still works.  But this not ideal for the users i am trying to roll Power BI out to who all use IE and are not the most computer savvy.

I've played around with different IE versions and in different locations (through work proxy, at home etc), and struggling to pinpoint why it does and doesnt work sometimes.

Has anyone had this issue?  Has anyone gotten to the bottom of it?

Thanks

Zara