When writing an Esri Geodatabase you should not use certain reserved words like "Select", "Delete" or "Update". For the complete lists per gdb version see FAQ: What are the reserved words for Esri's file geodatabase?
Everything works fine on the workbench side of things. Even ArcMap displays the geometry correctly. Only when you open the attribute table (or do any other query related action) you will get an error like:
"Could not load data from the data source. If you can correct the problem, press the refresh button to reload data. Possible problems can include bad network connection, invalid field, etc.
An invalid SQL statement was used.
An invalid SQL statement was used [Created]
An invalid SQL statement was used. [SELECT OBJECTID,Update FROM Created WHERE OBJECTID in (1)]"
It would be nice if workbench logged a warning when someone tries to write a reserved word as a column. Not sure how hard to implement (and maintain :-s).