I don't know if someone of us has experienced this problem with the
Visual Studio 2005 Designer, but for me it's not the first time
that it occours.
I have an application that uses some user controls between different forms
and on one of these user controls I've added a TabControl with different TabPages. Every TabPage is set to have a specific
BackColor (on my case, the color with RGB=196;
218; 250).
If I want to add a new TabPage, Visual Studio 2005 creates the new tab with
the default BackColor of "Transparent", so I have to correctly set the BackColor
of this newly created TabPage to 196; 218; 250. Ok, this is correct!
But sometimes this is the result:
the newly inserted TabPage makes all tabs of the TabControl to appear as a
"Transparent" background, while the BackColor
property is set correctly (as you can see below):


To correct the problem, I've to temporarily change the BackColor of the selected TabPage to another color and
then re-change it to the right 196; 218; 250. Now Visual Studio renders the
control correctly.
Anyone has noted this phenomenon?