Thank you for reporting this bug. We will make it our priority to review this report.
[FIXED] ComboBox - first expand overwrites text contents
I'm running into what seems to be a slight regression in the behavior of typing in a combobox in PR5 versus PR4. Steps to reproduce:
1) Load up the default ComboBox example page
2) Start typing into the first text field (in 'Data Sources'). When the combo box first drops down, the previously-typed text is cleared. Example: if I was starting to type 'Connecticut', the first 'C' would be cleared and I'm left with 'onnecticut' in the text field.
3) Once the boundlist has expanded, the buggy behavior seems to not reoccur. Refreshing the page and starting again brings it back.
This happens in PR5 (http://dev.sencha.com/deploy/ext-4.0...rm/combos.html ) but not PR4 (http://dev.sencha.com/deploy/ext-4.0...rm/combos.html ). Tested on Chrome 10.0.648.151 beta and Firefox 3.6.15.
This no longer happens and will be part of the next release.