First of all, this is a user-based forum so things like that report file aren't going to get much traction here... guys like me are just users like you and don't have the fancy tools that SmartBear support actually has.
That said, according to https://support.smartbear.com/testcomplete/docs/app-testing/desktop/qt/about.html#General, QT support is only available up to 5.12 in version 14.4. Any versions beyond 5.12 are not currently supported by TestComplete. That's where your visibility problem is.
You can still automate your application but it will take some reworking to use things like keyboard navigation, hotkeys, visual component identification, and OCR.
To head off your next question: To get support for QT 5.14 you should create a Feature Request here on the forums and, potentially, follow it up with a message to SmartBear directly.
Ok, sorry for the report. I thought it could be useful. I'll try to reach official support, then.
In any case, the issue comes only with those popup buttons, and nothing else. Also, sometimes it works sometimes not.
I'll try to find a way to workaround those problems, because changing the Qt libraries version, is way harder.
Thanks for the hints, by the way.
