Internet Browser Line Zoom Bug

https://a4jp.com/info.html

Seeing faint lines on websites when you zoom in? Subpixel rendering bug? Is your phone, tablet, PC or software buggy? Test your internet browser here. Zoom in on the boxes below. If your phone doesn't have faint lines between the divs when zooming in or out congratulations your device is bug free.

Code for the first div:

<div style="background-color:#333;padding:10px; width:150px; margin:0 0 5px">
<div style="float:left;background-color:#FFF;padding:10px">1.1</div>
<div style="float:left;background-color:#FFF;padding:10px">2.2</div>
<div style="clear:both"></div>
</div>

1.1
2.2
zoom in a bit to see lines
zoom in 100% or out 100%
to clear the lines
line →
← line
line →
←line
hello

2020 iPhone 11 Pro, iPad 12.9 inch 3rd gen, iPhone XS Max, iPhone X, iPhone 8, iPhone 7, iPhone 7 plus, iPhone 6s, iPhone 6s plus...

2020-09-17th iOS 14 and iPadOS 14
2020-04-15th 4:30pm called Apple to cancel the pickup of the iPad as the details were completely wront in the email I got T-T. Ask for customer relations to help again. Said the first Apple case numbers and last 3. Hope I can get help. Ken is very polite and speaks both English and Japanese.
2020-04-14th Went to BICCAMERA Apple store to get iPad checked and was talking to support for 2 hours. Details about dark spot on screen were sent to me saying the camera was broken but it wasn't.
I got 2 messages that John tried calling but I'm sitting at home next to the phone. Got no calls.
101051704165 Asked for customer relations to help - sent images to John so he could check what is happening. Looks like something good is happening.
2020-03-25th iPadOS 13.4 iPad (NTFP2J/A)
2020-03-25th iOS 13.4 iPhone XS Max
2020-03-24th iOS 13.3.1 iPhone 10 XS Max (NT6X2J/A) - Lines not showing when this page is opened or zoomed in at 100% - lines show at any other zoom level or after zooming in or out on page

2020-01-30th iOS 13.3.1 iPhone 11 Pro
2019-09-20th iPad OS 13.1 beta 4 3rd gen iPad Pro
2019-09-05th iPad OS 13.1 beta 2 3rd gen iPad Pro
2019-09-04th iPad OS 13.1 beta 1 3rd gen iPad Pro
2018-11-15th iOS 12.1iPhone Max
2018-06-27th iOS 11.4 (15F79)
2018-02-22nd iOS 11.2.6 (15D100)
2018-01-01st iOS 11.2.1 (15C153) iPhone 7 plus test
2017-12-25th iPhone 8 plus and X in Yodobashi
2017-01-01st iOS 10.2
2016-10-26th iOS 10.1
2016-09-20th iOS 10.0.1 (14A403)
2015-09-24th iOS 9.0 (13A344)
2015-09-10th: This bug is on iOS 9 and the new iPad Pro with Apple Pencil. I was told buying a new phone is the best option to fix the problem.
2015-02-26th: info.html given to Apple for checking

Apple Support 2018-11-15th to find out about problem and get iPhone XS Max fixed 3:22 pm to 7:05 pm

Applecare Case Number:
774645784 (2015-04-07th, 23rd, 28th, 2015-06-18th)

First Applecare Case Number:
826756618

iPhone7とiPhone 7 PlusとiPadsとNew Macbooksの線問題
①ブラウザを開いて。a4jp.com/info.html または★マークのページのほかのサイトを開いてください。
②100% ズームインすると変な線がなくなるです。
1~99%変な線が表示します。

Line border bug on iPhone7, iPhone 7 Plus, iPads and New Macbooks.
1. Open the a4jp.com/info.html page (or other pages listed on the page with the star ★ below) in Safari or other browsers on an iPhone/iPad etc.
2. Pinch zoom to 100% to see the lines disappear. When you are slightly zoomed out you will see fine lines.

iPad: Safari, Mercury, Chrome, Opera, iLunascape, Doliphin Browser, Apollo Browser, and Webcapture all have the same problem.

Click here for the gallery of images related to this bug and websites to check

Here is a link to my Apple Support Communities post just after buying an iPad Air 2:
https://discussions.apple.com/message/27893999#27893999
アップルサポートのリンク

Video of the problem on an iPhone 6: https://www.youtube.com/watch?v=BfQFW9uid4M
問題のビデオ

Video of the line bug on an iPad Air 2: https://www.youtube.com/watch?v=W0CnTcaJaD4
問題のビデオ

 

Screenshot of the problem:
問題のJPG

hairlines - subpixed rendering bug - fine lines - Safari - zoom in - divs - 2020 iPhone iPad Pro - 4th Gen iOS 13.3.1 13.3.2

If you need any other info or want to contact me send a message through my contact page.


 

Horizontal lines/gaps on iOS Safari between inline divs

Retrieved 2012-01-06th, 7:13 pm
https://freewaytalk.softpress.com/thread/view/101990

Single/sub pixel misalignment of divs on ipad and iphone safari

Retrieved 2011-04-29T13:45:01
https://stackoverflow.com/questions/5832869/single-sub-pixel-misalignment-of-divs-on-ipad-and-iphone-safari

space/gaps between divs on website when viewed on iPhone/iPad

Maybe this is the same problem from way back in 2010.
2010-10-19T17:03:34 https://stackoverflow.com/questions/3970787/space-gaps-between-divs-on-website-when-viewed-on-iphone-ipad/4334006