Faint vertical line appears in Claude

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Level 1

8 points

Faint vertical line appears in Claude

Subject: Faint Vertical Line Appearing in Claude App on iPad

Hi everyone,

I’ve noticed a faint vertical line appearing near the center of the screen when I use the Claude app on my iPad. The line does not align with any UI element—it’s thin, light, and shows up over the content (not as part of the split-screen artifacts divider or any visible panel boundary).

A few key details:

- The line appears only in the Claude app and is visible in screenshots, so it seems to be software-rendered, not a sign of a cracked or damaged screen.

- It remains in the same place regardless of scrolling or moving content.

- Restarting the app does not always resolve the issue.

- I haven’t seen the same artifact in other apps.

Has anyone else experienced this? Is it a known bug, or does anyone have troubleshooting tips beyond standard restarts? Should I report it directly to Anthropic, and if so, how?

Thanks in advance for any help or insight!

iPad Air, iPadOS 18

Posted on Nov 26, 2025 10:24 AM

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Answer 1

Top-ranking reply

LotusPilot

Community+ 2025

Level 10

301,238 points

Nov 26, 2025 10:38 AM in response to maxbberg

Try deleting the offending App from your iPad - then perform a forced-restart prior to reinstalling the App from the App Store.

Remove or delete apps from iPad - Apple Support

Force restart iPad - Apple Support

If the problem persists with the App, you'll need to seek assistance from the associated App Developer:

How to contact an app developer - Apple Support

Many App Developers have a website where you may find additional online help resources.

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Answer 2

Nov 26, 2025 2:56 PM in response to David M Brewer

David M Brewer wrote:

A basic restart does the same thing that a force restart does.

Not so.

A basic shutdown/restart - and forced restart - are entirely different in effect...

Shutdown saves the current program/App states - and will reload saved-state upon restart. By contrast, a forced restart does not save the current state - and instead causes Apps and services to be fully reinitialised "clean" as they are accessed.

As such, a forced restart will clear and reset faulting processes - including the iPad's network stack.

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Answer 3

Nov 26, 2025 6:39 PM in response to LotusPilot

No, you should not force quit an iPad rather than restart it; instead, you should only force quit an app if it is misbehaving. Forcing apps to close frequently is unnecessary and can actually decrease performance and battery life. A full restart is a better option than habitually closing apps to fix an issue or when an app freezes, but force-restarting is best used as a last resort when the iPad is unresponsive.

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Answer 4

Nov 26, 2025 12:14 PM in response to maxbberg

A basic restart does the same thing that a force restart does.

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Answer 5

maxbberg Author

Level 1

8 points

Nov 27, 2025 1:41 AM in response to maxbberg

Thank you everyone. Anthropic have at last fixed this. I appreciate everyone's input.

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Answer 6

Nov 27, 2025 3:16 AM in response to maxbberg

maxbberg wrote:

Thank you everyone. Anthropic have at last fixed this. I appreciate everyone's input.

Excellent. Delighted to learn that the App Developer has been able to resolve the issue.

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Answer 7

Nov 27, 2025 3:23 AM in response to David M Brewer

David M Brewer wrote:

you should only force quit an app if it is misbehaving.

Not disputed. The OP reports a problem with the App; therefore it may be necessary to fully reinitialise a faulting App or process, requiring a forced-restart. A simple shutdown and restart as you advocate will preserve a faulting state - not clear it.

Forcing apps to close frequently is unnecessary and can actually decrease performance and battery life.

Not disputed. Unnecessary closing and restating an App does require more power than simply resuming a paused App. The only impact to performance is taking marginally longer to open the App.

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