Seems like the button had increased in size and can overlap with the indicator (by 2px).
@@ -807,6 +807,8 @@ const TabIconButton = styled(Button)<{active: boolean}>`
box-shadow: none;
transition: none !important;
opacity: ${p => (p.active ? 0.7 : 0.5)};
+ height: 24px;
+ max-height: 24px;
&:not(:last-child) {
margin-right: ${space(1)};