Publisher 1.9 crashes opening files (Catalina)

[Beniamino]

Hi, I'm experiencing this terrible bug since I have upgraded to Catalina 10.15.7 (I really needed it because of other apps). I was working in Sierra without a problem. I've made a clean install of Catalina and the software that I need: the Affinity Suite, Final Cut, and Blender, as usual.
Here is a list of problems that I've found today.

1 - I've tried to double-click on a .afpub brochure that I was working on some days ago, and Affinity Publisher crashed after trying to open it. If I moved the file to another place, it opened in 1 second (I suppose because it doesn't find lots of pictures and ask me to relink them). You can find the Crash Report 1 attached.
2 - I've tried with another brochure, and it happened the same. So I've tried to open it from Affinity Photo: it worked (the previous brochure didn't open in this way), even if it opened only a spread page. But from there I moved it to Publisher (Modify in Publisher) and it opened. Then I've saved it and now it opens from Publisher.
3 - Then I've tried with some small labels and they opened (one by one). But if I select all of them (12) from the finder and press command+o, Affinity Publisher crashes immediately. You can find the Crash Report 3 attached. So I cannot open them all together. If I move them to another position and do the same, they open (and it asks for the linked pictures).

What bug are these? Are they known or tracked? I'm afraid... I think that is related to the os because it never happened in an old os. But I can't stay in the old os... sadly.
Can someone please help?

One more info: I've tried to do the same with the last beta that I've found, but it's the same.

Thank you, Beniamino

Crash Report 1.txt Crash Report 3.txt

[Beniamino]

Please, you can close or remove this post... It's a duplicate of another post that I've done, sorry! Thank you