I do wonder what the thought process was, or if the TIE originally wasn’t meant to be destroyed or pop up throughout the rest of the movie. It’s not impossible for him to just have multiple ships or whatever, but it is weird for the movie to present what could be read as a plot hole like that. Just kind of weird.
I bet it was clarified at one point, but for some reason it was believed that the finale of the Skywalker saga didn’t need to be longer than the rest of the movies. So they started ripping out “unneeded” scenes and clarifications.
IMO this movie needed to be 3 hours long in order to work right. Reminds me of the whole Justice League situation. I hope one day we get a longer cut just like with that movie.