Architect Mode does not render its own Mermaid designs

[chubshaun]

App Version

3.14.3

API Provider

Google Gemini

Model Used

Gemini Pro 2.5

Actual vs. Expected Behavior

EDIT: The issue seems to be that parentheticals don't seem to be valid Mermaid syntax - if I paste this mermaid code into mermaid.live it shows an error:

Error: Error: Parse error on line 11:
...[Prepare LLM Prompt (Inject Paths, Paren

Removing the parentheses fixes the issue:

    I --> J[Prepare LLM Prompt (Inject Paths, Parent Schemas)]
    J --> K{Call LLM (sendToBedrockLLM)}

To

    I --> J[Prepare LLM Prompt Inject Paths, Parent Schemas]
    J --> K{Call LLM sendToBedrockLLM}

[samhvw8]

this is from gemini not from Roo
look like we need clean but only for gemini

like this repo https://github.com/Gitesh08/mermaid-diagram/

[chubshaun]

FWIW - I've seen a lot of LLMs mess up Mermaid syntax - we almost need the mermaid equivalent of jsonrepair.

https://github.com/josdejong/jsonrepair

[samhvw8]

@chubshaun yeah but i see that only google model mess up with mermaid :(

[Jannchie]

I also observed this issue when using GPT-4.1.

[mrubens]

You can try copying the error message that the recent versions of the app give and tell it to fix

[dsent]

I've shared the rule I use to help me with unrenderable Mermaid (Roo/Architect/Gemini 2.5 Pro) in the comment to #2897:
#2897 (comment)