So I decided to redesign the Classic theme dialogs, with the use of the AI-provided icons. It all works well and without problems on the installation UI, but I had ran into some problems with the maintenance UI (below). All images that were not a button had a gray background to them, and strange color changes, and sometimes the images were cut off.

The images in the maintenance UI in dialog editor is fine. I then tested the UI, and then some problems arose (second one from left). I then built the UI and see how it would be like if it were to be distributed, and some of the images were changed (third one from left). Any help would be appreciated on solving this problem.
P.S, if I enable the button for "Modify" (second image from the left) the problems were gone and the image was displayed normally and hyperlinks had a abnormal white background, if that helps at all