The Lookup Record dialogue box has been changed significantly (for the better) in Compiere 263. There are however differences between earlier versions and the 263 version which do not seem to be intended.
. In C_Order table check the Selection box for the field C_BPartner_ID
. Open the Sales Order Window and select the Lookup Record icon which will show the Business Partner as a selection option
. Enter part of a BP Name and hit enter. This should either display the name of the BP if the partial name entered was unique or it should open the BP Search box. It does neither it simply returns to the Sales Order screen and displays all sales orders.
. Now do the same as above (i.e. enter part of a BP name) and hit tab. This returns to the Sales Order window immediately without displaying the selected name or the search box in the event that it is non unique) and selects only those orders with the selected BP name.
I have only used the Sales Order as an example. The problem happens on all windows where BPartner is selected. I have not tested this with selections other than Business Partner.