The substitution of Turtle instructions from integer graphics to fine graphics or vice versa fails to redraw the diagram immediately

[codemanyak]

The 'Edit' menu actions to replace the integer Turtle instructions fd(...) and bk(...) by the precise instructions forward(...) and backward(...), respectively, (or vice versa) in the selected part of the diagram fail to update the diagram presentation immediately. This used to induce at least irritation or even drawing artefacts like this:

The changes get only fully visible on e.g. clicking into the diagram.