bug: The year / month selected in the year / month picker will be reflected in the calendar with a one-month shift.

[tatsuyasenbom]

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

Current Behavior

Safari on iPhone iOS 15.1

• In Safari on iOS, after the ion-datetime embedded in ion-popover is displayed, the year / month selected in the year / month picker will be reflected in the calendar with a one-month shift.

iphone.mp4

Google Chrome on Android 12 or Windows10

• However, it will be reflected correctly on Google Chrome on Android or Windows.

android.mp4

Expected Behavior

• I want you to improve the behavior of Safari on iOS.

Steps to Reproduce

1. Run the code below to build.

   <ion-label>{{ report_date | date:"yyyy年MM月dd日 (EEE)" }}</ion-label>
   <ion-popover [isOpen]="isPopover" arrow="false" style="--offset-y: -35%;">
     <ng-template>
       <ion-datetime (ionChange)="onChangeDate($event)" showDefaultTitle="true" presentation="date">
         <div slot="title">報告日</div>
       </ion-datetime>
     </ng-template>
   </ion-popover>

2. I did the same operation as the video I uploaded to Current Behavior.

Code Reproduction URL

• add ion-datetime on ion-popover

Ionic Info

Ionic:

   Ionic CLI                     : 6.18.1 (C:\Users\Administrator\AppData\Roaming\npm\node_modules\@ionic\cli)
   Ionic Framework               : @ionic/angular 6.0.1
   @angular-devkit/build-angular : 13.0.4
   @angular-devkit/schematics    : 13.0.4
   @angular/cli                  : 13.0.4
   @ionic/angular-toolkit        : 5.0.3

Capacitor:

   Capacitor CLI      : 3.3.3
   @capacitor/android : not installed
   @capacitor/core    : 3.3.3
   @capacitor/ios     : not installed

Utility:

   cordova-res : 0.15.4
   native-run  : 1.5.0

System:

   NodeJS : v14.17.0 (C:\Program Files\nodejs\node.exe)
   npm    : 6.14.13
   OS     : Windows 10

Additional Information

No response

[averyjohnston]

Thanks for the issue. Could you create a starter app that reproduces the problem and post a link to the repo here?

[ionitron-bot]

Thanks for the issue! This issue has been labeled as needs reproduction. This label is added to issues that need a code reproduction.

Please reproduce this issue in an Ionic starter application and provide a way for us to access it (GitHub repo, StackBlitz, etc). Without a reliable code reproduction, it is unlikely we will be able to resolve the issue, leading to it being closed.

If you have already provided a code snippet and are seeing this message, it is likely that the code snippet was not enough for our team to reproduce the issue.

For a guide on how to create a good reproduction, see our Contributing Guide.

[tatsuyasenbom]

• I made a sample to reproduce the task using Ionic 6.0.1 x Angular 13.0.4.
  • add ion-datetime on ion-popover
• Below are the builded files. I will attach it just in case.
  • www.zip

[averyjohnston]

Thanks! I'm able to replicate. It looks like the issue is that the datetime is too small, which is causing the intersection observers to fire when they shouldn't. As a workaround, you can set the datetime to a higher width -- it looks like 276px does the trick.

Some other interesting things:

• I could only reproduce on iOS 15.0, 15.1, and 15.2. I could not reproduce on iOS 14.7.
• The bug only happens on iOS mode. MD mode works, even on iOS 15.

[tatsuyasenbom]

Thanks! I'm able to replicate. It looks like the issue is that the datetime is too small, which is causing the intersection observers to fire when they shouldn't. As a workaround, you can set the datetime to a higher width -- it looks like 276px does the trick.

Some other interesting things:

• I could only reproduce on iOS 15.0, 15.1, and 15.2. I could not reproduce on iOS 14.7.
• The bug only happens on iOS mode. MD mode works, even on iOS 15.

Thank you for your answer !

I have avoided this phenomenon by fixing the mode to md once.

I'm looking forward to working properly with ios mode by default !

[liamdebeasi]

Thanks for the issue. Can you try the following dev build and let me know if it resolves the issue?

npm install @ionic/[email protected]

[tatsuyasenbom]

Thanks for the issue. Can you try the following dev build and let me know if it resolves the issue?

npm install @ionic/[email protected]

Thank you very much for contacting me.

I built tatsuyasenbom/ionic-angular-sample and confirmed that Safari on iPhone iOS 15.2 improved the problem.

[liamdebeasi]

Glad to hear the fix is working for you! This has been resolved via #24554, and a fix will be available in an upcoming release of Ionic Framework.

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.