Demos: Many demos open graphic windows. After docking the first one, many warnin

Reported by Samuel GOUGEON (@sgougeon)

-- Bug description --


Demos: Many demos open graphic windows. After docking the first one, many warnings occur. The main window sometimes jumps on the screen. For demos, docking the demos menus and the graphic window with the console is much confortable than without docking, but is presently quite badly supported.


-- Scilab error message --


Start demos
Dock the demo GUI
Start for instance "Sound file handling"
Dock the figure 100001
...
-->clf(my_handle,"reset");
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
-->halt
--><return>
-->// Or a Fourier analysis.
-->clf(my_handle,"reset");
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
-->analyze(s);
// Then, the whole Scilab window jumps to the down right side.

With
Graphics / Complex elementary functions: The figure 100001 is reset for each function, in such a way that its docking is each time undocked.
etc. Also:
-->
 WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
WARNING: 'axes_size' property can not be modified if the Figure is docked with other elements.
...


-- How to reproduce the bug --