Contextual menu not working when editing macro inline

To reproduce:

• Create page with content (required figure macro extension intalled):

  {{figure}}
  |= Headcell1 |= Headcell2
  | cell1 | cell2
   
  {{figureCaption}}Table caption{{/figureCaption}}
  {{/figure}}
  

• Edit in WYISWYG and try to right click in a table cell. You should see the menu appear quickly and then close itself.

See also video attached