You are using Corona 6 which was released in 2020. Similar issues were fixed in newer versions of Corona. Please update to Corona 9 (Download | My Chaos) and if you are still able to reproduce the issue in this version, please let us know.
Although I tried the same process with Corona 9, I am still facing the same issue.
I’ve used the same rendering settings as before. Does the newer version require me to set any additional render settings? It would be appreciated if I could solve the same issue in Corona 6.
Please find attached screenshot of settings and output.