Hmm, I wonder whether it is something like a timing problem: the SD card mounting occurring slightly later or taking slightly longer than previously, with the result that the apps on it aren't available when the app drawer is being set up? Just speculating, but it reminds me of what happens if you move an app whose widget you use to sd: the widget works fine until you reboot, then fails, and that is because the SD card becomes available too late in the startup sequence.
I think you should report this to Samsung. It may not achieve much (Samsung are hardly unique in the industry in that their first instinct is to fob customers off rather than investigate and fix problems), but if it is something like that behind this that's the only way it will be fixed.
I think you should report this to Samsung. It may not achieve much (Samsung are hardly unique in the industry in that their first instinct is to fob customers off rather than investigate and fix problems), but if it is something like that behind this that's the only way it will be fixed.