Comment 2 for bug 2063219

The issue here is undeclared dependencies on libglib2.0-0 in snapd / deb2snap conversion packages, in this case, thunderbird, causing it to fail to install, because an empty libglib2.0-0 transitional package is unpacked early in the upgrade removing the library they need.

The libssl3 is a strawman, it immediately gets solved by apt unpacking libssl3t64.

I'm marking this as a duplicate of bug 2061918 where we track the bug already.