Double-Click failed in abap editor(new)

My sap gui version is 740 patch 7

First time: When I doublie-click on type:spmon, the system wiil bring me to "Data Element:SPMON"

Second time: When I doublie-click on type:mara-matkl, the system wiil bring me to "Data Element:SPMON" again......

How can I solve this porblem??