Based on the analysis of the provided documents and considering the given hint about the lack of warning on right-left rendering of certain language in the README.md affecting presentation in task.json, I have identified the following issues:

1.  **Issue related to presentation of Persian text in `task.json`**
    - **Issue**: "Right-to-left (RTL) text presentation issue"
    - **Evidence**: The `task.json` file contains Persian content, such as: 
    ```
    "input": "«بهترین پاسخ به «خیر، ممنون» چیست؟", 
    "target_scores": {
        "بله، خواهش میکنم": 1,
        ...
    ```
    This snippet indicates the use of Persian, an RTL language, within the dataset. 
    - **Description**: Given that Persian text flows from right to left, the lack of explicit guidance in `README.md` on handling RTL script presentation might lead to improper display or alignment issues when visualizing or using the dataset, especially in environments or applications that do not automatically detect and adjust for RTL languages.

2.  **Issue related to clarification in `README.md`**
    - **Issue**: "Absence of rendering instructions for RTL languages"
    - **Evidence**: The `README.md` content mentions several sources from which the task data is derived but does not provide any instructions on dealing with RTL languages:
    ```
    ## Data source

    This task is self-created. Many common and well-known Persian idiom are available from the websites...
    ```
    - **Description**: The `README.md` file does not specify that the dataset includes content in a right-to-left language (Persian) or offer guidance on how such content should be properly displayed or processed. This absence of a warning or instructions is problematic for contributors and users who might utilize the dataset in environments that require explicit RTL configuration, inevitably affecting the data presentation quality.