Hello,
In the end, it looked like this was indeed an issue on our side.
At first, I tested on my VM on which, as you can see, I was not able to reproduce this issue.
After that, I tested on my own machine again because other users also reported this and I managed to reproduce it.
I have forwarded this to our dev team and a fix is available for this. Here is the download link for a RC of Advanced Installer that contains the fix:
download link for the fix
Hope this helps!
Best regards,
Catalin