message: Don't leave button tooltips open when closing modals
diff: @@ -15,7 +15,7 @@ See the License for the specific language governing permissions and
  limitations under the License.
  */
  -import React, { SyntheticEvent } from 'react';
  +import React, { SyntheticEvent, FocusEvent } from 'react';
  import AccessibleButton from "./AccessibleButton";
  import Tooltip, { Alignment } from './Tooltip';
  @@ -68,6 +68,12 @@ export default class AccessibleTooltipButton extends React.PureComponent<IProps,
  this.props.onHideTooltip?.(ev);
  };
  + private onFocus = (ev: FocusEvent) => {
  + // We only show the tooltip if focus arrived here from some other
  + // element, to avoid leaving tooltips hanging around when a modal closes
  + if (ev.relatedTarget) this.showTooltip();
  + };
  +
  render() {
  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  const { title, tooltip, children, tooltipClassName, forceHide, yOffset, alignment, onHideTooltip,
  @@ -84,7 +90,7 @@ export default class AccessibleTooltipButton extends React.PureComponent<IProps,
  {...props}
  onMouseOver={this.showTooltip}
  onMouseLeave={this.hideTooltip}
  - onFocus={this.showTooltip}
  + onFocus={this.onFocus}
  onBlur={this.hideTooltip}
  aria-label={title}
  >
  