If a perform a right click on an image and I choose the "compress..." entry, the image compression form appears. Then I change the default compression force and I click on the "ok" button in order to compress the image. Next, if I repeat the whole process on an other image (or the same image), then I don't retrieve the compression force that I choose the last time into the image compression form.
I think it should be as an enhancement, not really a bug.
Before reporting, I couldn't find a previous report of this bug. *** This bug has been marked as a duplicate of bug 89620 ***