I have a scene of a simple black and white starfield (Control → TextureRect). I’ve added children to the TextureRect; each is a Sprite2D glow/glint with a script that randomly fades them in and out. The scene is dropped into a Parallax2D node (note: I’ve tried other configurations too).
Note how the glints don’t align on repeats, just the prime. The repeated versions offset all the glints. Each repeat to the right is moved up more, and each to the left is moved down more (if I set Repeat Times higher).
ALSO perhaps related, repeats delete the background properly, but not the glints: https://postimg.cc/vDx6xtPK
I’ve unsuccessfully tried parenting to different node types.
Hm. I can’t tell at a glance, but if you wouldn’t mind sharing your project or a minimal reproduction, I’d be happy to tell you what’s wrong and how to fix it.
Ah! I think I see what the matter is: All of your glints are rotated. There was a bug that was recently fixed that seems to fit the bill. The fix will be in 4.3.1, but if you can’t wait, it’s also in 4.4 dev1 that was released the other day as well.