page5
First image: it's smaller than the page. Selecting both, image and shape and performing Right click → Shapes → fusion (3rd form function) you'll obtain in 5.3.6.1 no effect
Second image: it's the same than before, but it was enlarged
Now, selecting both, enlarged image and shape and doing Right click → Shapes →fusion (3rd form function) you'll obtain in 5.3.6.1 no effect
Third image: originally larger than the page. Selecting both, picture and shape and doing Right click → Shapes →fusion (3rd form function, in german verschmelzen) you'll obtain in 5.3.6.1 no effect