Uploading image using the QuicklyInsertImage button causes image resize issues

I am using Kentico version 9 and have an issue with the QuicklyInsertImage button on the CKeditor.

When I upload an image the upload works but if I open the image properties and then press save & close the image width and height are being set incorrectly causing images to be to large and stretch on the page.

If I press Reset Size the image width and height is correctly set but again pressing save & close causes the height and width to be incorrect.

I have checked the automatic resize settings and the fields are all left blank.

example: upload an image of 200X98 open image properties all is correct press Save & close Image stretches open image properties again image height and width is now 744*365. Press Reset Size correct values show press save & close but same problem.

Large images of say 1920X1080 do the same but the size will be reduce to 744*418 when Save a& close is pressed.

Has this been seen before or have I missed an option somewhere? It looks like a resize is happening note the width of 744 on both large and small image.

thanks