When trying to replace an empty panel with one that contains a modal window during an AJAX request the DOM insn't modified. The wicket ajax debug windows shows that the request is being made and the answert, but when trying to apply the changes to the DOM the debug windows hangs after this message: "INFO: Response parsed. Now invoking steps...". If I press F5 to refresh, the chages are shown indicating that the request was processed correctly and the changes in the page hierarchy were persisted. However if I click again in the link that fires the ajax request the wicket debug windows shows this message: "INFO: Channel busy - postponing...".
We couldn't reproduce this issue in firefox. I'll attach a quickstart for reproducing the problem. When running it locally if I click in the link the DOM isn't updated as suppossed to.