RootCause: Cannot read properties of null (reading 'getHtml')

Error is popping during attempt to detect the order of qualities to apply for the right-side false-positives grid based on the actual order of appearance in the selected segment.

This happens in case when some segment was opened, segments grid was filtered so that opened segment does not match such filtering, another segment selected and then segment editor (if it's still opened) is clicked back due to just continue to edit or to move editor upper/lower