premiere altering my AE renders to include odd artifcating in the background

Yes, it has to do with the composition's background not being black or white. So if you are trying to use a black stroke on a text layer and want to see the thickness by creating a blue, red, or green background comp, you will need to switch the composition's background color to black (#000000)or white (#FFFFFF) before final export.
  The error occurs after saving and closing the Premiere Pro project for any comp you have exported that does not use a black or white background on the final export.
 When you re-open Premiere Pro, the alpha channel has a halo surrounding it that reflects the color of the background used in your AE comp. Even if you change that comp from straight to premultipled, you will still see a thin halo around that file.
I wanted to get more user feedback and see how many are affected by this error. Until we can get a fix, the simple workaround is to use a black or white background in your comp builds of the AE project.
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Ian

I'm thinking it may be the difference between pre-multiplied or non-mutiplied alpha. I know Premier doesn't always like one but never remember which it is. 

whenever i've reported it are the times i've had the issue. and not beyond that. so i've had it happen maybe twice in the past 2 years if i had to guess. thats the weird part about this glitch, im able to bring in tons to premiere with alpha channels that dont have issues. over a year ago adobe said the issue had to do with having a blue background. not the blue background you might think. like when press Command K and choose a color in that box. 

Hi @rachelcenter 

I still get this issue whenever I export Alphas and bring them into Premiere Pro. I'm checking in to see if you still see the same thing. I am going to try to get this re-evaluated for a fix. I'd like to reopen this ticket with the team.  It will be good to know how you have been doing and if you still see this issue happening. 

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Ian

I just found a fix, for me it was the "Linear color composition" option, i disabled it and now i'm just fine 😄

Look

I'm on premiere pro and the thing is, when i'm visualizing it inside the video editor and it's not fully rendered yet, it looks just okay but when i render it inside of premiere pro or export it, the images get this weird outline...

your'e gonna have to re-render from scratch to make it go away for now 

Does anybody have a fix to this? cause it's happening to me even without having any effects on it, my alfa colors/settings, etc are all correct, i tried codecs like Prores 444 and it still bugs.

I reported this back in december 2024, and now in September 2025 it appears the issue is back