I added a SimpleCombobox to my form and called setEditable(false) to keep the user from typing in their own values. But now, I cannot tab through the form anymore - the focus gets stuck on the ComboBox. This is in B3, haven't tried it in B4 but didn't see it fixed in the release notes.
This bug has been fixed in the Ext GWT 3.0 Release Candidate. Please upgrade your copy of Ext GWT and try your test case again. While we're confident that we've addressed this issue, please reply if you notice any continued problems after upgrading. Again, thanks for taking the time to report this bug.