i realized a extremely slow render performance for FormPanels in ExtJS 3.0 compared to 2.x. I simply have a window with a embedded FormPanel which contains several (about 10) controls (edit, combo, ...), nothing special at all. When the window is shown i can see each control seperatly how it is displayed and rendered. If i use the same code with ExtJS 2.3 the window and it's embedded form panel is shown completely rendered if it becomes visible. I could not realize any significant time differences with 3.0 and 2.3 until the window is shown (after calling show() function).
Does anyone have the same problem or any hint? If needed i can commit any code.