bug: delegatesFocus patch for ios causes rendering issues with item sliding in chrome

[deving1995]

Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

• v4.x
• v5.x
• v6.x
• Nightly

Current Behavior

When you click to drag an ion-item inside of an ion-item-sliding and you have an ion-input in the ion-item if you start the drag by hovering over the ion-label, then end the drag while hovering over the ion-input the slider abruptly jiggles to the left, slams shut, and when you drag it to open it again the ion-item-option is missing.

You can fix the ion-item-sliding by dragging it back to the left even though it is already shut.

I believe the issue is that the ion-item-option is somehow being pushed out of view.

Expected Behavior

I expect that when I am intending to drag an ion-item inside an ion-item-sliding that releasing the mouse while hovering over an ion-input will not cause the ion-item-sliding to close, or for the ion-item-option to disappear when re-opening.

Steps to Reproduce

1. Click the ion-label of the ion-item
   • Do NOT let go of the mouse
2. Drag the ion-item to the right until the cursor turns into a text-cursor
3. Release the mouse
4. Open the ion-item-sliding back up to see that the ion-item-option is now gone

<ion-item-sliding>
  <ion-item-options side="start">
    <ion-item-option>Test</ion-item-option>
  </ion-item-options>
  <ion-item>
    <ion-label>Test Slider</ion-label>
    <ion-input></ion-input>
  </ion-item>
</ion-item-sliding>

Before option disappears

After option disappears

And here's a gif of the issue in action

Code Reproduction URL

https://github.com/deving1995/ion-item-sliding-issue

Ionic Info

[WARN] Error loading @capacitor/ios package.json: Error: Cannot find module '@capacitor/ios/package'

   Require stack:
   - C:\Users\dgero\AppData\Roaming\npm\node_modules\@ionic\cli\lib\project\index.js
   - C:\Users\dgero\AppData\Roaming\npm\node_modules\@ionic\cli\lib\index.js
   - C:\Users\dgero\AppData\Roaming\npm\node_modules\@ionic\cli\index.js
   - C:\Users\dgero\AppData\Roaming\npm\node_modules\@ionic\cli\bin\ionic

[WARN] Error loading @capacitor/android package.json: Error: Cannot find module
'@capacitor/android/package'

   Require stack:
   - C:\Users\dgero\AppData\Roaming\npm\node_modules\@ionic\cli\lib\project\index.js
   - C:\Users\dgero\AppData\Roaming\npm\node_modules\@ionic\cli\lib\index.js        
   - C:\Users\dgero\AppData\Roaming\npm\node_modules\@ionic\cli\index.js
   - C:\Users\dgero\AppData\Roaming\npm\node_modules\@ionic\cli\bin\ionic

Ionic:

Ionic CLI : 6.18.1 (C:\Users\dgero\AppData\Roaming\npm\node_modules@ionic\cli)
Ionic Framework : @ionic/angular 6.1.4
@angular-devkit/build-angular : 13.2.6
@angular-devkit/schematics : 13.2.6
@angular/cli : 13.2.6
@ionic/angular-toolkit : 6.1.0

Capacitor:

Capacitor CLI : 3.5.1
@capacitor/android : not installed
@capacitor/core : 3.5.1
@capacitor/ios : not installed

Utility:

cordova-res : not installed globally
native-run : 1.5.0

System:

NodeJS : v14.17.1 (C:\Program Files\nodejs\node.exe)
npm : 8.6.0
OS : Windows 10

Additional Information

The reason I believe the issue is that the ion-item-option is being pushed off screen is because you can actually get the ion-item-option to be partially out of view.

.

[liamdebeasi]

Thanks for the issue. This appears to be a Chrome specific bug. Focusing the input seems to cause the view to scroll/translate.

[deving1995]

Thank you for the information, is there a workaround for this?

[liamdebeasi]

This issue is caused by https://github.com/ionic-team/ionic-framework/blob/main/core/src/components/item/item.tsx#L294. There is a bug on iOS 13 where delegatesFocus is not working correctly. As a result, we added a patch to try and fix the behavior.

Unfortunately, this had the unintended side effect of introducing the behavior reported here. Once we drop support for iOS 13, we should be able to remove this patch.

---

As for a workaround, you could try using a native <input> element instead of <ion-input> for now. The patch only activates if ion-item detects an ion-input or ion-textarea: https://github.com/ionic-team/ionic-framework/blob/main/core/src/components/item/item.tsx#L284

[liamdebeasi]

Hi there,

We are proposing some changes to form components that seek to resolve this issue. We would love your feedback on these proposed changes! You can read more about the changes and leave comments here: #25661

[deving1995]

Thank you!

[liamdebeasi]

Hey there,

I merged a fix in via #25822 that resolves this issue. The relevant code was originally there to work around an iOS 13 bug. We will be dropping iOS 13 support in Ionic 7, so we are targeting the fix for that release.

I am going to close this since the code has been merged, but let me know if you have any questions. Thanks for the report!