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[GH-ISSUE #22866] issue: Hardcoded lang="en" in HTML header triggers unwanted browser translation popups and breaks localization #58497

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opened 2026-05-05 23:17:36 -05:00 by GiteaMirror · 1 comment
GiteaMirror commented 2026-05-05 23:17:36 -05:00
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Originally created by @dotmobo on GitHub (Mar 19, 2026).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/22866

Check Existing Issues

  • I have searched for any existing and/or related issues.
  • I have searched for any existing and/or related discussions.
  • I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!).
  • I am using the latest version of Open WebUI.

Installation Method

Docker

Open WebUI Version

v0.8.10

Ollama Version (if applicable)

No response

Operating System

debian

Browser (if applicable)

firefox esr

Confirmation

  • I have read and followed all instructions in README.md.
  • I am using the latest version of both Open WebUI and Ollama.
  • I have included the browser console logs.
  • I have included the Docker container logs.
  • I have provided every relevant configuration, setting, and environment variable used in my setup.
  • I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
  • I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
  • Start with the initial platform/version/OS and dependencies used,
  • Specify exact install/launch/configure commands,
  • List URLs visited, user input (incl. example values/emails/passwords if needed),
  • Describe all options and toggles enabled or changed,
  • Include any files or environmental changes,
  • Identify the expected and actual result at each stage,
  • Ensure any reasonably skilled user can follow and hit the same issue.

Expected Behavior

The <html> tag's lang attribute should dynamically update to match the user's selected language (e.g., lang="fr" when French is selected). This ensures that browsers recognize the correct language, preventing automatic translation popups and ensuring the interface remains in its native, localized state.

Actual Behavior

The HTML header hardcodes lang="en", causing the browser to treat the entire page as English regardless of the selected interface language. This triggers intrusive browser translation popups for non-English users. If the user accidentally clicks "Translate," the browser attempts to translate text that is already localized, resulting in broken, double-translated, or nonsensical interface text.

Steps to Reproduce

  1. Open Open WebUI and navigate to the user settings.
  2. Change the interface language to French (or any language other than English).
  3. Refresh the page.
  4. Inspect the page source (Right-click > View Page Source or open Developer Tools).
  5. Observe that the <html> tag still contains lang="en" instead of lang="fr".
  6. Check if the browser automatically displays a "Translate this page" popup.

Logs & Screenshots

Image Image

Additional Information

No response

Originally created by @dotmobo on GitHub (Mar 19, 2026). Original GitHub issue: https://github.com/open-webui/open-webui/issues/22866 ### Check Existing Issues - [x] I have searched for any existing and/or related issues. - [x] I have searched for any existing and/or related discussions. - [x] I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!). - [x] I am using the latest version of Open WebUI. ### Installation Method Docker ### Open WebUI Version v0.8.10 ### Ollama Version (if applicable) _No response_ ### Operating System debian ### Browser (if applicable) firefox esr ### Confirmation - [x] I have read and followed all instructions in `README.md`. - [x] I am using the latest version of **both** Open WebUI and Ollama. - [x] I have included the browser console logs. - [x] I have included the Docker container logs. - [x] I have **provided every relevant configuration, setting, and environment variable used in my setup.** - [x] I have clearly **listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup** (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc). - [x] I have documented **step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation**. My steps: - Start with the initial platform/version/OS and dependencies used, - Specify exact install/launch/configure commands, - List URLs visited, user input (incl. example values/emails/passwords if needed), - Describe all options and toggles enabled or changed, - Include any files or environmental changes, - Identify the expected and actual result at each stage, - Ensure any reasonably skilled user can follow and hit the same issue. ### Expected Behavior The `<html>` tag's `lang` attribute should dynamically update to match the user's selected language (e.g., `lang="fr"` when French is selected). This ensures that browsers recognize the correct language, preventing automatic translation popups and ensuring the interface remains in its native, localized state. ### Actual Behavior The HTML header hardcodes `lang="en"`, causing the browser to treat the entire page as English regardless of the selected interface language. This triggers intrusive browser translation popups for non-English users. If the user accidentally clicks "Translate," the browser attempts to translate text that is already localized, resulting in broken, double-translated, or nonsensical interface text. ### Steps to Reproduce 1. Open Open WebUI and navigate to the user settings. 2. Change the interface language to **French** (or any language other than English). 3. Refresh the page. 4. Inspect the page source (Right-click > View Page Source or open Developer Tools). 5. Observe that the `<html>` tag still contains `lang="en"` instead of `lang="fr"`. 6. Check if the browser automatically displays a "Translate this page" popup. ### Logs & Screenshots <img width="1884" height="484" alt="Image" src="https://github.com/user-attachments/assets/eb429f93-209f-40c2-96ff-774333d1ee0c" /> <img width="212" height="72" alt="Image" src="https://github.com/user-attachments/assets/ea2936f9-2668-4f1a-bd77-16c3266ae2ce" /> ### Additional Information _No response_
GiteaMirror added the bug label 2026-05-05 23:17:36 -05:00
GiteaMirror commented 2026-05-05 23:17:39 -05:00
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@tjbck commented on GitHub (Mar 20, 2026):

Addressed in dev.

<!-- gh-comment-id:4100871104 --> @tjbck commented on GitHub (Mar 20, 2026): Addressed in dev.
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Reference: github-starred/open-webui#58497
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