QML loader loads parts of old component

When reusing a QML loader for loading different qml files then parts of last loaded item is visible when loading a new item which inherits from the first item. I have uploaded a small example.

Steps to reproduce:
1. Click on comp2 (Should show a blue rectangle over a red rectangle with some text stating comp2)
2. Click on comp1 (Should show a green rectangle with text stating comp1)
3. Click on comp2 again

Result: Step 3 should show the same as step 1 but instead it shows a blue rectangle over a green one with text stating comp1. In short: the properties "color" and "text" for Comp1 are not overridden by Comp2.

Can reproduce on:

• desktop 64 bit linux with X11 using the attached files
• arm 32 bit linux with wayland using similar code

This bug may be related to QTBUG-50677