Trying this version of jqGrid out and experiencing problems.
- ESC key is not programmed properly for Chrome and 'editRow' events. Major pain.
- ENTER key does not save on editRow select elements with Firefox
- setting a column to have editrules: required blows out with Javascript error missing isEmpty
Makes this version almost unusable.
Try the demo where I made the fixes which I described here and here. The problems which you described in your question can't reproduced on the demo.
Currently jqGrid has no automatic testing (like jQuery UI use for example). So changes can produce new bugs. In the situation if the developer who uses jqGrid found a bug the user should provide the demo which can be used to reproduce the bug. So if you next time get some problems you should provide the test case instead of the list of problems which you have.