### **Environment**:

Your OpenProject Version: **OpenProject 12.0.7**

Operating System / Browser / OpenProject language: Windows 10 / Chrome 91.0.4472.77, Edge 91.0.864.41, Chrome portable, Firefox 88.0.1 / OpenProject language: Русский, English

### **Logs**

No Begin of the insertionerrorsEnd of the insertion Begin of the deletion errors End of the deletion

### **Steps to reproduce:**

1. Go to page Work Packages
2. Create 1 Task with  2 SubTask  and for SubTask create 2extra SubSub task
3. Select wrong progress for Parent Task

### **Actual Behavior**

Now progress for Task 40%

<figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/27109/content"></div></figure>

### **Expected Behavior**

It should be 30% because Task include two SubTasks they will cost for task like 50% from progress. Task progress= 50% of progress from SubTask 1 + 50% of progress from SubTask 2 = 50% from 0 + 50% from 60 = 30%

<figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/27114/content"></div></figure>