I've run into another problem with new version.
To recreate the problem use my test page:
Page has two panels, one hidden, one visible.
Editor is on the hidden panel initially.
On page load, I set the initial text of the editor.
I post the page back and show the panel the editor is on and the text I set is gone. Editor.Text = "".
Is there a solution?
This breaks the page I use the editor on in my project badly as I it is designed as a Wizard with panels for each step.
If I have editor on a panel in a middle step, my initializations are not there when I get to that step.
This worked fine in 5.3.