IE - Steps will not reappear after being hidden

[imaGuru]

I am using the exact versions of the following:

• Browser: IE/Edge
• AngularJS: 1.6.6
• Angular Bootstrap: 2.5.0
• Angular UI Tour: 0.9.0

I have installed this library via: bower

I have observed the following behavior:
In IE and Edge the tour steps will not reappear after they have been hidden.
IE doesn't change the display: none !important style back to display:block.
Changing this line of code:
step.popup[0].style.setProperty('display', 'none', 'important');
to
step.popup[0].style.setProperty('display', 'none');
Fixes the issue.

[benmarch]

Thanks, @imaGuru, I'll play around with those styles.