I discovered that the webpagecontrol at design time does not change pages. It never changed pages by clicking on the tabs as it works in delphi, but it did when changing the pageindex property.
Am working with VSC Webcore 1.9.85543.
The actual project that am working on is kind of complex, so I decided to test just to see if it fails with a simple project, and it failed indeed.
Made a two page webpagecontrol, and it stays on page 0 no matter what I do. It changes the color of the tab when I change the tabindex property, but it does not show the content of the selected page.
To illustrate the problem, on the webpagecontrol in the attached screenshot I selected tabindex = 1. It should show the contents of sheet2, but it stays on sheet1 forever.
I clicked the label contained under sheet2 on the component treeview side, and it highlights the component "under" but can not drag it or view it at design time. I can change properties but with a real project that has dozens of components into different webtabsheets is almost impossible to maintain my ongoing application.
They do change at runtime, but am finding very hard to change component location, add new components, and other tasks that are intuitive when you can see what you are doing directly on screen.
