Two changes in behaviour in the new v12.8 of b4a, not issues but posting my experience here for information sharing purposes/
1. okhttputil2 seems to take a about 100ms longer to process responses
2. creating an app bundle I get a filename 'result.aab' instead of the projectname.aab
As I said not show stoppers or issues just differences I experienced or noticed.
About the filename, if I create apk, it may also produce result.apk, which I think is due to the project name having white space or special characters like period.