Here is an example provided by ng bootstrap. 
I copy the same code with only labels and values ββreplaced in my angular project and get the following result. 
The HTML provided here
<div _ngcontent-c1="" class="btn-group btn-group-toggle special ng-valid ng-dirty ng-touched" name="radioBasic" ngbradiogroup="" role="group" ng-reflect-name="radioBasic" ng-reflect-model="user1"> <label _ngcontent-c1="" class="btn-primary btn active" ngbbuttonlabel=""> <input _ngcontent-c1="" ngbbutton="" type="radio" value="user1" ng-reflect-value="user1" name="radioBasic">User1 </label> <label _ngcontent-c1="" class="btn-primary btn" ngbbuttonlabel=""> <input _ngcontent-c1="" ngbbutton="" type="radio" value="user2" ng-reflect-value="user2" name="radioBasic">User2 </label> </div>
Why is my result different from the example? How to remove selection points?
Any correction or pointer to documents will be highly appreciated!
EDIT:
Versions here
Angular CLI: 1.6.1
Angular: 5.1.3
bootstrap@4.0.0-alpha.6
@ ng bootstrap / ng bootstrap @ 1.0.0-beta.9
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