Glitch in 2.5: Joiner init w/o default join

Dear KNIMErs,

Just a minor glitch I found in 2.5:

The joiner node initialises without a default join option, i.e. not even "RowId on RowID". That's impractical considering that in the past it did, and some nodes (e.g. Pivot) are even geared to make this default useful.