actioncolumn disappears when I close a tab and open it again.
I'm new to Extjs. I`ve been studying about two months and trying to build an application. So far I'm doing great, but I've came through an issue that I just can't figure out. Here's the problem: I have a viewport with the border layout. In the west side it has some buttons that add tabs to the center where there is a tab pannel. One of the tabs that is added has a fieldset and a grid pannel and in the grid pannel the last column is an actioncolumn.
It works fine the first time I open the tab, but once I close it and open again, the buttons in the actioncolumn disappears. If I want it to appear I need to reload the entire page (f5). I've tested on IE8, Chrome and Firefox 6 and the result is the same on all of them. Could somebody gimme a hand?