Thank you very much for your detailed help and for providing the example screenshot.
I found the cause of the problem. The display scaling on my 4K monitor was set to the default 150%, and I also realized that I had not enabled Manga Mode. I apologize for overlooking such an important setting and for the confusion this caused.
After changing the display scaling and enabling Manga Mode, the translations are now correctly overlaid on top of the original text inside the speech bubbles, exactly as I expected. Everything is working perfectly now!
I really appreciate you taking the time to explain the settings and possible causes in such detail. Your example screenshot made it especially easy for me to understand what the correct result should look like.
Thank you again for your patience and excellent support!