bug: progress bar stops animation when navigating back from another page (only on ios)

Bug Report

Ionic version: [x] 4.x

Current behavior: A progress bar (ion-progress-bar) stops moving (indeterminate) when navigating to another page and going back to the previous page (the one with the progress bar). This happens only on android - it works on android and in the web.

Expected behavior: ion-progress-bar is animating

Steps to reproduce: Insert a ion-progress-bar to your page. Open a new page from the page. Go back to the previous page using the back button. The progress-bar will stop animating.

Ionic info:

Ionic:

   Ionic CLI                     : 5.4.1
   Ionic Framework               : @ionic/angular 4.9.1
   @angular-devkit/build-angular : 0.801.3
   @angular-devkit/schematics    : 8.1.3
   @angular/cli                  : 8.1.3
   @ionic/angular-toolkit        : 2.0.0

Capacitor:

   Capacitor CLI   : 1.2.1
   @capacitor/core : 1.2.1

Utility:

   cordova-res : 0.6.0
   native-run  : 0.2.7

System:

   NodeJS : v10.15.3 (C:\Program Files\nodejs\node.exe)
   npm    : 6.4.1
   OS     : Windows 10

[liamdebeasi]

^ If you are going to use JavaScript to force a repaint, I’d also recommend wrapping it in a requestAnimationFrame to try and avoid any jank.

[ionitron-bot[bot]]

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