Black circles appear in the sky

I currently have a problem when I look into the sky vertically above me, black circles appear :

These circles disappear when I move away from them. I have already tried recalculating the shadows, disabling the SkyDomeMesh and changing the time of day but nothing has changed.
I saw a reddit post with the same problem but no response (

I managed to hide it by changing my skybox parameters but I don’t know if it will be a long term solution