Basic Flex still NOT fixed in Safari

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <title>Flex-Layout Template</title>
    <link rel="stylesheet" href="assets/style.css" />
    
    <!-- Polyfills -->
    <script src="https://unpkg.com/core-js/client/shim.min.js"></script>
    <script src="https://unpkg.com/zone.js@0.7.4?main=browser"></script>
    <script src="https://unpkg.com/systemjs@0.19.39/dist/system.src.js"></script>

    <script src="lib/config.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  </head>

  <body>
    <test-app>
    loading...
  </test-app>
  </body>

</html>

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
      // Copy of compiler options in standard tsconfig.json
      "target": "es5",
      "module": "es2015",
      "moduleResolution": "node",
      "sourceMap": true,
      "emitDecoratorMetadata": true,
      "experimentalDecorators": true,
      "noImplicitAny": true,
      "suppressImplicitAnyIndexErrors": true
  },
  meta: {
      'typescript': {
        "exports": "ts"
      }
    },  
  paths: {
    'npm:': 'https://unpkg.com/'
  },
  //map tells the System loader where to look for things
  map: {
    
    'app': './src',

    '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
    '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
    '@angular/flex-layout' : 'https://rawgit.com/angular/flex-layout-builds/master/bundles/flex-layout.umd.js',
    
    // other libraries
    'rxjs':                      'npm:rxjs',
    'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
    'typescript':                'npm:typescript@2.0.10/lib/typescript.js',    
  },
  //packages defines our app package
  packages: {
    app: {
      main: './boot.ts',
      defaultExtension: 'ts'
    },
    rxjs: {
      defaultExtension: 'js'
    }
  }
});

//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {TestAppModule} from './app/test-app-module';

platformBrowserDynamic().bootstrapModule(TestAppModule);

//our root app component
import {Component} from '@angular/core'

@Component({
  selector: 'test-app',
  template: `
    <div fxLayout="column" fxFlexFill style="flex: 1 0 auto !important; background-color:blue;">
      <div fxFlex="100px" style="background-color:red;">explorer-nav</div>
      <div fxFlex fxLayout="row" fxLayoutAlign="flex: 1 0 auto !important; space-between stretch">
        <div fxFlex="100px" style="background-color:yellow;">
          <div fxFlexFill fxLayout="column" fxLayoutAlign="start stretch" style="flex: 1 0 auto !important;">
            <div fxFlex="100px" fxLayout="column" fxLayoutAlign="center center" 
              (click)="toggleDirection()" style="background-color:CornflowerBlue;">
              <img src="../../../assets/images/button1.png" alt="button1">
              <p>button1</p>
            </div>
            <div fxFlex="100px" fxLayout="column" fxLayoutAlign="center center" 
              (click)="toggleDirection()" style="background-color:DodgerBlue;">
              <img src="../../../assets/images/button1.png" alt="button2">
              <p>button2</p>
            </div>
            <div fxFlex="100px" fxLayout="column" fxLayoutAlign="center center" 
              (click)="toggleDirection()" style="background-color:CornflowerBlue;">
              <img src="../../../assets/images/button1.png" alt="button3">
              <p>button3</p>
            </div>
            <div fxFlex style="flex: 1 1 100%; min-height:100vh;"></div>
            <div fxFlex="100px" fxLayout="column" fxLayoutAlign="center center" class="userIcon" 
              (click)="toggleDirection()" style="background-color:CornflowerBlue;">
              <img src="../../../assets/images/user.png" alt="User">
            </div>
          </div>
        </div>
        <div fxFlex fxLayout={{direction}} fxLayoutAlign="space-between stretch" style="flex: 1 0 auto !important; background-color:green;">
          <div [fxFlex]="panelWidth" [fxShow]="explorerShow"  style="background-color:orange;"
               fxLayout="column" fxLayoutAlign="start stretch" class="listPanel">
            explorer-detail
          </div>
          <div fxFlex style="flex: 1 0 auto !important; background-color:black; color: white;">
            <div fxFlexFill style="flex: 1 1 100%; min-height:100vh; background-color:blue; color: white;">
             explorer-map
            </div>
          </div>
        </div>
      </div>
    </div>
  `,
})
export class TestApp {
  direction = "row";
  panelWidth = '300px';
  explorerShow = true;

   toggleDirection() {
     let next = (DIRECTIONS.indexOf(this.direction) +1 ) % DIRECTIONS.length;
     this.direction = DIRECTIONS[next];
   }
}
const DIRECTIONS = ['row', 'column'];

import {Component, NgModule} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import * as Rx from 'rxjs/Rx';

import {FlexLayoutModule} from "@angular/flex-layout";

import { TestApp} from "./test-app";

@NgModule({
  imports: [ 
    BrowserModule,
     FlexLayoutModule
  ],
  declarations: [ TestApp ],
  bootstrap: [ TestApp ]
})
export class TestAppModule {}

html, body, test-app {
  display: block;
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  min-width: 100%;
  min-height: 100%;
}

Suggestions: 
1. add "display: block;" to full screen body and friends to initialize.
2. For any naked "flex" that could be a "column", add style="flex: 1 1 100%; min-height:100vh;" to the element.
3. Add "flex: 1 0 auto !important;" to the parent layout elements that are not correctly being filled to their children's heights.
4. ???