Steps to reproduce:
1. Open the file human_T1.fa.
2. Use popup menu
3. Add fragment from project to molecule content
4. When "Force blunt and omit all overhangs" is unchecked try to construct circular molecule
Steps to reproduce:
1. Open the file human_T1.fa.
2. Use popup menu
3. Add fragment from project to molecule content
4. When "Force blunt and omit all overhangs" is unchecked try to construct circular molecule