--keep-going ignored by MissingInputException

[jorgenriseth]

Snakemake version
v8.28.0

Describe the bug
--keep-going does not keep going if there is a MissingInputException.

Given a list of desired outputs created from independent dags(as shown in image), I would expect snakemake to keep running the workflows that are not affected by the missing files. This does not seems to be the case.

Minimal example
Snakefile

rule testrule:
  input:
    "{name}.txt"
  output:
    "{name}.out"
  shell:
    "touch {output}"

Execution:

touch {a,b}.txt
snakemake {a,b,c}.out --keep-going

Logs

Building DAG of jobs...
MissingInputException in rule testrule in file /home/jorgen/snakeminimalex/Snakefile, line 1:
Missing input files for rule testrule:
    output: c.out
    wildcards: name=c
    affected files:
        c.txt

DAG when run only for existing files shows independent "DAGs" (single rule for this example).

touch {a,b}.txt
snakemake {a,b}.out --dag | dot -Tpdf > dag.pdf