After initiating a new panorama using the simple interface initial presentation of the result looks appropriate aside from the size. Usually it is a small rendition using only a small portion of the available space. When attempting to adjust the image via the move drag button the image frequently disappears completely leaving only the blue lines that show the perspective. Sometimes it will reappear when the image is refreshed by the center or fit buttons but not always. The scaling guides on the side and bottom also do not work correctly. I've attached a couple of images although I suspect you already have test mules ready to go.
Here is my environment:
Operating System: macOS Catalina Version 10.15.3 (Build 19D76)
Architecture: 64 bit
Free memory: 0 kiB
Hugin
Version: 2019.2.0.b690aa0334b5 built by Niklas Mischkulnig
Path to resources: /private/var/folders/2x/jjnj00011fs0lzy422wnx6dw0000gn/T/AppTranslocation/67DCFD8A-0682-4EC5-B52C-26A7332B9C9F/d/Hugin.app/Contents/Resources/xrc/
Path to data: /private/var/folders/2x/jjnj00011fs0lzy422wnx6dw0000gn/T/AppTranslocation/67DCFD8A-0682-4EC5-B52C-26A7332B9C9F/d/Hugin.app/Contents/Resources/xrc/
Hugins camera and lens database: /Users/michaelmaas/.hugindata/camlens.db
Multi-threading using C++11 std::thread and OpenMP
Monitor profile: /Library/ColorSync/Profiles/Displays/Color LCD-3B531320-1900-4452-74F6-225B449883DD.icc
Libraries
wxWidgets: wxWidgets 3.1.3
wxWidgets Library (wxMac port)
Version 3.1.3 (Unicode: wchar_t, debug level: 0),
compiled at Dec 15 2019 13:14:03
Runtime version of toolkit used is 10.15.
libpano13: 2.9.19
Boost: 1.71.0
Exiv2: 0.27.2
SQLite3: 3.28.0
Vigra: 1.11.1
LittleCMS2: 2.9