Firefox has quite recently started showing a new and very annoying behaviour. When I have multiple tabs open with image files, Firefox will randomly unload the images when I switch between tabs. There seems to be no rhyme or reason as to when and why. In one instance I may be able to go through 10 tabs without an issue, and in other instances it will unload and have to reload images multiple times, even if I am only switching between two tabs. Sometimes the images will reload automatically a couple of seconds after switching to a new tab, and other times the image will not reload unless I navigate away to a different website and then hit the back button to return to the image. In either case, it's extremely aggravating when looking back and forth between two images in different tabs to compare differences when they reload every single time I switch between them. This only seems to happen with image files. I can have any number of web pages open in different tabs and they will not unload, but if the address points directly to an image it exhibits this behaviour. I have already looked for solutions and tried disabling the 'browser.tabs.unloadOnLowMemory' option through the 'about:config' menu, but this has no effect on the behaviour at all. It continues to unload images when this option is set to 'false'. This behaviour is a very recent change from how Firefox usually works, so I'm assuming that it's something to do with the latest update(s). I've only noticed it happening in the past couple of weeks, though I don't remember exactly when in that timeframe the problem first appeared. Looking for any possible solutions or options that I might try to correct this.