Unable to Rotate Image jpg to Portrait

I have added a jpg media image to RM8 of a headstone and it appears incorrectly as a landscape thumbnail rather than portrait. When I click on the image to view it, the image then appears correctly in portrait view.

In RM7 when you view the media, there are options to edit the image colour settings as well as to flip or rotate the image. In RM8 when I select edit media and click on the image, all I see is a View Image window with no options to edit the image.

I have installed RM8 on a Windows 10 PC - am I missing something or is the image edit function still to be added to RM8.

Any suggestions please?