MATLAB: Uipanel() invisible in MATLAB 2015a

uipanel() invisible

I have developed GUI using 2010b created sliding window using uipanel() and style 'silder' in uicontrol(). The slider is invisible when loaded in version 2015a.

Best Answer

The slider is hidden behind something else.
As of R2014b, uicontrol no longer automatically show up on top: now if something is drawn after they are drawn, the uicontrol will be hidden.
It is common when creating GUI with GUIDE to accidentally parent controls to the wrong thing. If you accidentally parented to the figure then because the uipanel is on top of the figure, the controls would be hidden.