2019266 - Fix get_page_content to not return chrome:// error that the assistant doesn't know what to do with

Status: VERIFIED FIXED

(Core :: Machine Learning: Frontend, defect, P1)

Description

[Rares Doghi, Desktop QA]

Attachment: hi.png

Found in

• Nightly 150.0a1 (2026-02-24)

Affected versions

• Nightly 150.0a1 (2026-02-24)
  Beta 149.0b1

Affected platforms

• all

Preconditions
Have the Gemini AI model selected.

Steps to reproduce

1. Open a Smart window.
2. Type Hi or Hello in the Smart bar.

Expected result

• The Ai model should respond appropriately to the users Prompt.

Actual result

• The Gemini AI model is returning an Error about not being able to access the content from the New tab.

Regression range
N/A

Comment 1

[Tzu-An Liu]

Quick update:
While reproducing this issue, I found that get_page_content is not used so it's not the root cause.
Also, there is another bug that partially impacts on this one. I'll fix that one first, and then we should get less unwanted response.
Even with that fix, some test cases like query = "h" still failed though not mentioning "Chrome" anymore:
I can't access the content of the New Tab page. Is there anything else I can help you with?
To address/mitigate this issue I would need to tune prompts and some evaluations are needed to see if the change caused regression in other aspects.

Comment 2

[Tzu-An Liu]

Update:
verified the other bug is irrelevant to this one, the "improvement" should due to randomness of LLM.
It would still need some prompt tuning to mitigate this issue.

Comment 3

[BugBot [:suhaib / :marco]]

The severity field is not set for this bug.
:Mardak, could you have a look please?

For more information, please visit BugBot documentation.

Comment 4

[Tzu-An Liu]

Attachment: Bug 2019266 - Fix get_page_content to not return chrome:// error that the assistant doesn't know what to do with r?bjohns

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/6a5a38d1ea0d
https://hg.mozilla.org/integration/autoland/rev/c33c71ac3902
Fix get_page_content to not return chrome:// error that the assistant doesn't know what to do with r=bjohns,ai-models-reviewers

Comment 6

[Silaghi Andreea]

https://hg.mozilla.org/mozilla-central/rev/c33c71ac3902

Comment 7

[Rares Doghi, Desktop QA]

Verified as fixed in our latest Nightly Build 150.0a1 (2026-03-18) we can reopen this issue if it starts to show up for other prompts