align_assign_decl_func=0 is not working as expected

[JEAYNE]

Uncrustify-0.78.1_f downloaded from github, running on Windows 11.

Remainder: Explanation for option 'align_assign_decl_func'

How to apply align_assign_span to function declaration "assignments",
i.e. 'virtual void foo() = 0' or '~foo() = {default|delete}'.
0: Align with other assignments (default)
1: Align with each other, ignoring regular assignments
2: Don't align

For this input file

struct foo {
    int id = 0;
    virtual void f() = 0;
    int debugLevel = 2;
    ~foo() = default;
    int done = 3;
};

These two commands:
uncrustify -c /dev/null --set align_assign_decl_func=0 --set align_assign_span=3 -f input.cpp
uncrustify -c /dev/null --set align_assign_decl_func=1 --set align_assign_span=3 -f input.cpp

Give the same output:

struct foo {
    int id         = 1;
    virtual void f() = 0;
    int debugLevel = 2;
    ~foo()           = default;
    int done       = 3;
};

The output above is ok when align_assign_decl_func=1

But for align_assign_decl_func=0 I'm expecting the output below:

struct foo {
    int id           = 0;
    virtual void f() = 0;
    int debugLevel   = 2;
    ~foo()           = default;
    int done         = 3;
};

The attached file contains the input file, the config files, the output files and the debug files for align_assign_decl_func=0 and align_assign_decl_func=1

align_assign_decl_func.tar.gz