yo Janusz! cheer up! I am not a heavy nor usual user of UML (more of a BA) .... but I did learn about starUML about 10 years ago when looking for free and simple apps... then I totally discared it (the old 2005 version as useless, using boUML then which was never too good) ... this year I made the search again and found about your project... what can I tell you... this is great, you moved the project forward into the year 2018, thank you very much.. that is already priceless. and eventhough i have...
I have the same problem, for example if a picture is opened with "exifviewer" (android...