Approved status is not updating immediately on UI

Hi

When the status of Quotation  line item is changed from Open,Withdrawn,Submitted to Approval etc to ‘Approved’. 

Previous status is displayed on SAVE of quotation. But if i check in database the status is already set to ‘Approved’ for a particular record as I have clicked on SAVE.

If I comes out of the view,and reenter into the Item view, status is showing right value as ‘Approved’. This is happening only for Approved status in Quotation.

I have checked this with Ignore Enhancements parameter, but same result. can you anybody give me some pointer on this.

Thanks

Shaik