Clean Up function is applied to the unselected bonds of another cyclic structure

**Description:**
When Clean Up function is applied to the selected bonds of the right cyclic structure, the selected bonds are not cleaned up, but other unselected bonds of the left cyclic structure are cleaned up instead.

**Steps to reproduce:**
1) Create two cyclic structures with only single bonds and with single and double bonds (for example, cyclohexane).
2) Distort a different parts of the created structures.
3) Select several bonds of the right structure.
4) Click 'Clean Up' button.

**Actual result:**
The selected bonds of the right cyclic structure are not cleaned up.
But other bonds of the left cyclic structure are cleaned up.

**Expected result:**
Only the selected bonds of the right cyclic structure are cleaned up.