Hi, there I tried your technique with affinity designer:
First of all thanks for your answer, it did at list show me more ( working space of affinity designer ) than I lastly did ( just the representative illustration of the app )
I did clear it all and it shows me the workspace ... however, this is not working either as it keeps displaying an endless loading cursor freezing the app and then I still need to force quitting ... I'll try the beta version of affinity publisher beta :'(
Publisher beta:
I regularly launch it : did load a bit while opening, did the same process ( create something and then save ): on saving still the endless loading cursor freezing the app .... temporary miracle happened: it finally save it.
Then I quit the app, relaunch it by double clicking: was loading for ever, did froze the app, had to force to quit, and have to force to quit.
Then I launch by holding on ctrl then clear, then it launches again but frozen + forever loading cursor : had to force to quit.
+ On Facebook, they are talking ( slowly ... ) about fonts .... but I did not added fonts lately and were asking me to disable all user font but still did not work.