Subpage shows image from previous subpage

Greetings.

We found a possible bug displaying images on subpages.

Expected behavior: Switching between subpages with images will show correct image on each page.

Actual behavior: The first subpage shows the correct image. From the second page visited, the previously displayed image is loaded. Then clicking through following subpages the image which should have been displayed before is shown in the following subpage. Only reloading the page or clicking on „edit" shows the correct image. However, the file name shown below always refers to the expected image even if another image is shown…

This happens only on subpages, not on the parent page.