The class "__dayOfWeekTile" of the dateRangePicker is broken in 8.1.4

Hi
The class “.ia_dateRangePicker__calendarBar__dayOfWeekTile” of date range picker component is borken in 8.1.4 and doesn’t work.

Indeed, it looks like it’s named iaDateRangePicker instead of .ia_dateRangePicker

Here is the relevant CSS in PerspectiveComponents.css:

.iaDateRangePicker {
  width: 236px;
  height: 246px;
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  padding: 8px;
  align-items: center; }
  .iaDateRangePicker * {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none; }
  .iaDateRangePicker.iaDateRangePicker--disabled {
    cursor: not-allowed; }
    .iaDateRangePicker.iaDateRangePicker--disabled * {
      pointer-events: none; }
  .iaDateRangePicker .monthAndYearSelectorContainer {
    display: flex;
    height: 30px;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
    margin-bottom: 2px; }
  .iaDateRangePicker .yearSelectorContainer {
    margin-left: 8px; }
    .iaDateRangePicker .yearSelectorContainer .yearSelector {
      width: 65px; }
      .iaDateRangePicker .yearSelectorContainer .yearSelector > span {
        position: absolute;
        right: 0;
        top: 52%; }
      .iaDateRangePicker .yearSelectorContainer .yearSelector select {
        width: 100%; }
  .iaDateRangePicker .monthSelectorContainer .monthSelector {
    width: 100px; }
    .iaDateRangePicker .monthSelectorContainer .monthSelector select {
      width: 100%; }
  .iaDateRangePicker .calendarBar {
    display: grid;
    grid-template-columns: repeat(7, 30px);
    grid-template-rows: repeat(1, 30px); }
    .iaDateRangePicker .calendarBar .dayOfWeekTile {
      height: 30px;
      width: 30px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: default;
      pointer-events: none; }
  .iaDateRangePicker .calendar {
    display: grid;
    grid-template-columns: repeat(7, 30px);
    grid-template-rows: repeat(5, 30px); }
    .iaDateRangePicker .calendar .dayTile {
      height: 30px;
      width: 30px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer; }
      .iaDateRangePicker .calendar .dayTile.active.outOfRange {
        cursor: not-allowed; }
      .iaDateRangePicker .calendar .dayTile.filler {
        cursor: default;
        opacity: 0.5; }

EDIT: am an idiot; see below.

but why other related class of .ia_dateRangePicker__ is working fine but not this one?

I did find an instance of that class in light.css, the theme file. Here is the style being applied:

.ia_dateRangePicker__calendarBar__dayOfWeekTile { 
    color: var(--neutral-90); 
    font-size: 0.875rem; 
    line-height: 1rem; 
    font-weight: 500; 
}

As to why it isn’t working, I’m not sure. Are you using a custom theme?