Console error "Cannot read properties of null (reading 'scrollWidth')" when hintbox is closed while being dragged

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      Steps to reproduce:

      1. Open Latest data or APM with some data, or any page that contains hintbox
      2. Click on the tag / item details or attribute, for hintbox to appear
      3. Start moving the hintbox with mouse
      4. At some point, while moving the hintbox, press ESC button

      Result:
      Console error appears:

      jsLoader.php?ver=8.0…uiMessaging=1:19370 Uncaught TypeError: Cannot read properties of null (reading 'scrollWidth')
    at jsLoader.php?ver=8.0…essaging=1:19370:29
(anonymous)	@	jsLoader.php?ver=8.0…uiMessaging=1:19370
requestAnimationFrame		
dragMove	@	jsLoader.php?ver=8.0…uiMessaging=1:19360

      See video:

      Expected:
      There should be no console errors in such scenario.

        1. console_error_dragging_hintbox.gif
          console_error_dragging_hintbox.gif
          397 kB

            Assignee:
            Zabbix Development Team
            Reporter:
            Nikita Gogolevs
            Team A
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              Created:
              Updated: