Relative paths to included taskfiles not consistently resolved

Task version: v3.12.1 (h1:SmYDqaRgt9NOm/ogPaMviwckYCqCjbGek9DKF//5A2g=)
Operating System: Ubuntu 20.04.4 LTS running under Windows 11 WSL

When resolving taskfile imports using relative paths, the base directory used to resolve the path isn't consistent, resulting in attempts to read the taskfile from the wrong folder.

Example

Directory structure:

/path/to/project/Taskfile.yaml # top level
/path/to/project/alpha/Taskfile.yaml first subfolder
/path/to/project/common/Taskfile.yaml second subfolder, a sibling of alpha

# /path/to/project/Taskfile.yaml
includes:
  alpha:
    taskfile: ./alpha/Taskfile.yaml
    dir: ./alpha
  common: 
    taskfile: ./common/Taskfile.yaml
    dir: ./common

# /path/to/project/alpha/Taskfile.yaml
includes:
  common: 
    taskfile: ../common/Taskfile.yaml
    dir: ../common

Expected behaviour

Relative path references to included Taskfiles resolved from the directory containing the including taskfile.

From /path/to/project/alpha/Taskfile.yaml the reference to ../common/Taskfile.yaml should resolve as /path/to/project/common/Taskfile.yaml
From /path/to/project/Taskfile.yaml the reference to ./alpha/Taskfile.yaml should resolve as /path/to/project/alpha/Taskfile.yaml, and the reference to ./common/Taskfile.yaml should resolve as /path/to/project/common/Taskfile.yaml

Actual behaviour

The path reference to ../common/Taskfile.yaml from /path/to/project/alpha/Taskfile.yaml is resolved using the folder /path/to/project/, resulting in the path /path/to/common/Taskfile.yaml which isn't found.

Analysis

The function Taskfile() from taskfile/read/taskfile.go reads in the hierarchy of includes, merging included taskfiles in as it goes.

When reading /path/to/project/alpha/Taskfile.yaml the inclusion of ../common/Taskfile.yaml is correctly resolved to /path/to/project/common/Taskfile.yaml and the tasks are read in.

Everything from /path/to/project/alpha/Taskfile.yaml is then merged into root taskfile found in /path/to/project/Taskfile.yaml, including the nested include of ../common/Taskfile.yaml.

This is then processed a second time, resolving to /path/to/common/Taskfile.yaml, triggering an error.

go-task / task