Video tearing / artifacts when rotating screen during playback.

BigAssTim wrote:

I went back to the store and could reproduce the problem on their 17PM phones.

Here are my non-default display settings:

Settings/Display - display zoom: Larger Text

After a long bout of tinkering and troubleshooting, I’ve found that the issue comes from having display zoom set to Larger Text.

If I have display zoom set to larger text, the behavior will always appear. I could not reproduce the issue with any other setting or setting combination.

So, if you happen to see this behavior, change the display zoom setting to default until the bug is fixed.

re: < Phone 17 pro max, iOS 26.2 >

Good computing BigAssTim ! Appreciate the update.

BigAssTim wrote:

I went back to the store and could reproduce the problem on their 17PM phones.

Here are my non-default display settings:

Orientation: unlocked

Dark mode: on

Night Shift: On

auto brightness: off

Settings/Display - display zoom: Larger Text

Settings/Accessibility - display text and size - increase contrast: on

After a long bout of tinkering and troubleshooting, I’ve found that the issue comes from having display zoom set to Larger Text.

If I have display zoom set to larger text, the behavior will always appear. I could not reproduce the issue with any other setting or setting combination. Only when display zoom is set to larger text would the graphical glitch appear. One thing to note, selecting bold text or increasing the text size did not cause the issue, only setting the display zoom to larger text would cause it.

So, if you happen to see this behavior, change the display zoom setting to default until the bug is fixed.

As you have identified a repeatable bug, you would be best advised to submit a Bug Report via Apple's Product Feedback portal - as this will ensure that the problem, cause and workaround fix are properly recorded by Apple. For iPhone and iOS:

Feedback - iPhone - Apple

Every report counts - as until Apple receive a sufficient number or reports, it is perhaps unlikely that resources will be assigned to investigate and resolve the issue.

When submitting a report, ensure that you include as much detail as possible within the body of the report - including your iPhone model and installed version of iOS; don’t rely upon the pick-list, as this rarely includes the full range of device models or most recent versions of iOS.

All contributors here are end users, just like you; other than the site Moderators, Apple neither monitors nor participates here. As such, your report here is unlikely to be seen by the very people that can address the issue in a future version of iOS. Submitting a Bug Report to Apple is in both yours and other's best interests.

Same issue here. I too have large text. Changing it back to default zoom does indeed fix the issue. Hoping Apple will fix this in future updates.

Thanks!

Follow the 3R 's- if a restart does not solve your problem proceed

Have you shutdown & restarted the iPhone ie power off/on...

Restart your iPhone - Apple Support

Reset or a Force Restart,

Force restart iPhone - Apple Support

Restore from backup, restore as new device.

Restore your iPhone, iPad, or iPod to factory settings using a computer - Apple Support

if no resolve—

Put your iPhone in diagnostics mode - identify potential hardware and software issues

How to put your iPhone in diagnostics mode - Apple Support

Similar issue. Identical cause. IPhone 17 Pro Max

Similarities

• appears to only be caused by “ZOOM - Larger Text”
• only occurs on iPhone playback. Not if streamed or watched on another device
• does not occur if screen sharing (apple support) or screen capturing.

Differences -

1) I don’t have to rotate between landscape and portrait to initiate the issue. It just does it.

2) I don’t just get vertical lines. I get half and full screen flashes, as well as image warping (like watching it through rippled water).

thanks for your post. Support booked me a Genius Bar appointment with a view to having the phone replaced. Clearly that will not resolve it.