Workarea not updated after deleting figure inset, on current master

[José Matos]

[So let us see if I can taunt Jean-Marc as well as Scott does :-D ]

Insert a figure inset as the single element of a paragraph. Load a
figure, even if there is an error converting it, delete the figure.

The bottom part of the inset figure will stay there. It is not
repainted.

If you delete the empty space, thus removing the paragraph, then
everything is right again.

Best regards,
-- 
José Abílio