The tradeoff is complexity. The microcode must be carefully arranged so that the instructions in delay slots are either useful setup for both paths, or at least harmless if the redirect fires. Not every case is as clean as RETF. When a PLA redirect interrupts an LCALL, the return address is already pushed onto the microcode call stack (yes, the 386 has a microcode call stack) -- the redirected code must account for this stale entry. When multiple protection tests overlap, or when a redirect fires during a delay slot of another jump, the control flow becomes hard to reason about. During the FPGA core implementation, protection delay slot interactions were consistently the most difficult bugs to track down.
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Looking at the Galaxy S26 family, you'd be hard-pressed to tell them apart from last year's phones. The camera surround is different, and the measurements of the smallest and largest phone are ever so slightly different. You probably won't be able to tell just by looking, but the S26 Ultra has regressed from titanium to aluminum, a reversion Apple also made with its latest high-end phones. This phone also retains its S Pen stylus.