Cursor always jumps to end of code editor when typing Cmd-S for save

When editing code, every time I type Cmd-S to save changes, the cursor jumps to the very end of the document. I then have to scroll upwards and find the location where I had been working, so it's quite annoying.

Additional info:

• This only happens with QML and JavaScript files, not cpp, pro, etc.
• Turning off "Enable auto format on file save" in the QtQuick -> QML/JS Editing preferences eliminates the problem – but at the expense of no more auto-formatting