Ionic version: (check one with "x")
[ ] 2.x
[ ] 3.x
[ X ] 4.x

Ion2-calendar mode: (check one with "x")
[ X ] components mode
[ ] modal mode

I'm submitting a ... (check one with "x")
[ ] bug report
[ ] feature request
[ X ] help me

Current behavior:
I have a custom height ion-toolbar set in the root of the project and it's causing a huge gap between

When building for iOs using Capacitor or Cordova, the header/toolbar has the wrong height, and is thus partially hidden behind the phone besel and the statusbar.

Steps to Reproduce

1. Open server/Ios App/Android App
2. Click on "Account" icon
3. Keep "Username& Email"/"Password" field blank
4. Click on "Check" link

Result: No 'Validation' appears for "Username OR email" OR "Password" Fields

It would be nice if there was an example of how to style the Ionic components using CSS variables. Judging by comments on articles about Ionic 4, styling the components seems to be one of the major challenges for people upgrading.

Hi,

Could you please implement an example for the ion-picker-controller? It seems that it doesn't work like the other controllers and isn't imported in ionic-vue/src/controllers/index.ts. Thanks!