When adding images in the rich text editor between 2 lines of text for example, when you save the page, the image is placed side by side within text when it should be between them.

Confirmed in versions 3.5 and 3.4.

Example: Wikimarkup:

testtesttesttesttesttesttesttest

!image_name.jpg|border=1!

testtesttesttesttesttesttesttesttest

Will become after saving:

testtesttesttesttesttesttesttest !image_name.jpg|border=1!
testtesttesttesttesttesttesttesttest