Scrollbar disappears on controlling with TAB | IE Edge

[Azkaaa]

I have configured scrollbar with following configuration. On controlling with tab the scrollbar disappears and comes back again if I press tab again. This appears on IE edge only. $scope.configScrollBar = { autoHideScrollbar: false, theme: 'rounded-dots-dark', axis: 'y', setHeight: '82', scrollButtons: { scrollAmount: 82, scrollType: "stepped" }, keyboard: { enable: true }, mouseWheel: { enable: false }, advanced: { updateOnContentResize: true }, }