While I was testing my angular web application in internet explorer 11, I noticed that loading spinner is not visualized correctly. In all other browsers it is ok. Here is my code:
<ng4-loading-spinner [timeout]="10000"> </ng4-loading-spinner>
Attached below is the loading spinner.

Dependencies
angular: 6.0.3,
bootstrap: 4.0.0
ng4-loading-spinner: 1.2.3