QuickDesigner: Integrated editor places cursor to eof on save

Steps to reproduce:

• open a Qml file inside the Quick Designer
• switch to the integrated editor
• edit the file
• trigger save [Ctrl+S or similar]

Current result:

• no matter where the cursor is located when triggering save, afterwards the cursor is located at end of file

Expected result:

• document is saved, but cursor stays where it was