I use a program that displays images in a window within a larger window. The file that is loaded into this window can contain 1 or more images. While the overall window displays correctly, the images in the smaller window within the larger window no longer display in v18. The smaller window that actually displays the image will have scroll bars if there are more than 1 image in the loaded file. With v18, the presence or absence of the scroll bars is correct so that window is receiving some information from the file regarding how many images are there. But the actual images won't display. In v17, I have to select the scaling display mode, otherwise the program will not be displayed correctly. In v18, I noted that if I change the display mode to Retina, the images are displayed but the entire layout of the large window is distorted and can't be used. So I have no choice but to use scaled mode. This issue occurs on both my computers, an iMac 27" Intel machine with a retina display and a new MacStudio M1 Ultra machine with the new Apple 27" Retina display. I've had to reinstall v17 to be able to work, so I cannot do any more testing. I've had to live with the USB bugs in v17 with my Phillips Speech Mike, which apparently have been fixed in v18. I'm incredibly disappointed in this major bug which makes v18 completely unusable for me. And I can't submit any debugging data as I no longer have v18 installed.