I found that generated Breakpad’s symbols file for an executable is not valid in case it is generated before bundling an application. As I understood, the executable is changed somehow during bundling.
So, I tried to solve this by unpacking .AppImage and generating symbols for the unpacked executable. And some of crash dumps became correct and pointed to a correct function. But some of them are still invalid.
When I test the same crashes for complied and not bundled executable, all crash dumps are valid and point in correct places.
Is there a way to produce correct symbols file for bundled executable?