Crash if in "Annotate with UQL Element" workflow select parament Merge=true

Scenario: 

1. Create the following workflow: Read sequence, Annotate with UQL Element, Write sequence, save as test.uwl. 
2. Load test.uwl file, see attachment.
3. Set Read sequence input file=samples/fasta/human_T1.fa
4. Set Write sequence: default file with file format=GenBank
5. Set  Annotate with UQL Element =patten  "TATAAAAA", see attachment: qr.url
6. Select parameter Merge=true (false was by default)
7. Run workflow
   Expected: 38 annotations with expected pattern in file with GenBank format
   Actual: Crash