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[BUG] <Teleprompter AI Scroll works in English but not in Japanese> #3863

Description

@mtachan-collab

Thank you for submitting a bug report to MentraOS! Please provide the following info as accurately as possible so that we can best assist you.

Bug Report

Glasses Hardware Model: [Even Realities G2 ]
Platform: [iOS]
**Phone OS Version:26.6
**Phone Model: iphone17pro
**App Version: Unknown
Network Conditions: [WiFi]
**Battery Level:90
Other Apps Running: [List if relevant]
Frequency: [Always]
User Impact: [Medium]

Issue Details

Steps to Reproduce:

  1. Open Mentra Teleprompter on Even Realities G2.
  2. Enter a simple Japanese script using common everyday vocabulary.
  3. Enable AI Scroll.
  4. Read the Japanese script aloud at a normal pace.
  5. The script does not scroll at all.
  6. Replace the script with a simple English script.
  7. Keep AI Scroll enabled and read the English script aloud.
  8. AI Scroll correctly follows the English speech and scrolls the script.

Expected Behavior:

[AI Scroll should follow my spoken Japanese and automatically scroll the Teleprompter script, just as it does when I read an English script.]

Actual Behavior:

[AI Scroll does not scroll at all when I read a Japanese script aloud.

As a comparison, I tested AI Scroll with a simple English script on the same Even Realities G2 and iPhone, and it worked correctly and followed my speech.

I also tested Japanese using a simple script containing only common everyday vocabulary, but AI Scroll still did not move at all.

Regular Mentra Captions can transcribe my Japanese speech accurately, so Japanese speech recognition itself appears to be working. The issue seems specific to the Teleprompter AI Scroll function.]

Other Relevant Details:

Fixed-speed automatic scrolling works correctly with Japanese.

The problem occurs specifically when AI Scroll is enabled.

English AI Scroll: Works correctly
Japanese AI Scroll: Does not scroll at all
Japanese fixed-speed scrolling: Works correctly

If Japanese is not currently supported by AI Scroll, please consider adding Japanese support.

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