Animations getAnimationStyle return undefined in angular 7.x with old browsers

[Serginho]

🐞 bug report

Affected Package

@angular/animations

Is this a regression?

No

Description

Since I've updated from angular 5.2 to 7.2 I'm getting the following errors related with animations:

Cannot read property 'split' of undefined

angular/packages/animations/browser/src/render/css_keyframes/element_animation_style_handler.ts

Line 91 in f8096d4

const tokens = anim.split(',');

Cannot call method 'trim' of undefined

angular/packages/animations/browser/src/render/css_keyframes/element_animation_style_handler.ts

Line 79 in f8096d4

const anim = getAnimationStyle(element, '').trim();

This error is happens at least in the following browsers:

Chrome (28.0.1500.94) running over Android (4.2.2)
Chrome (34.0.1847.114) running over Android (4.4.2)
Chrome (42.0.2311.111) running over Android (4.2.2)
Mobile Safari (8.0) running over iOS (8.4)
Android Browser (4.0) running over Android (8.1)

This is not happening in last versions of these browsers.

🔬 Minimal Reproduction

Running animations in any of this browsers

🔥 Exception or Error

TypeError: Cannot read property 'split' of undefined
    at t.push.NSYL.t.destroy (/vendor.6687942ea70b4222b345.js:1:436607)
    at t.push.NSYL.t.destroy (/vendor.6687942ea70b4222b345.js:1:437754)
    at /vendor.6687942ea70b4222b345.js:1:1559085
    at Array.forEach (native)
    at t.push.ihYY.t._onDestroy (/vendor.6687942ea70b4222b345.js:1:1559056)
    at t.push.ihYY.t.destroy (/vendor.6687942ea70b4222b345.js:1:1558941)
    at t.push.NSYL.t.destroy (/vendor.6687942ea70b4222b345.js:1:430640)
    at /vendor.6687942ea70b4222b345.js:1:415603
    at Array.forEach (native)
    at t.push.NSYL.t.destroy (/vendor.6687942ea70b4222b345.js:1:415574)

TypeError: Cannot call method 'trim' of undefined
    at t.apply (/vendor.6687942ea70b4222b345.js:1:435597)
    at t.init (/vendor.6687942ea70b4222b345.js:1:438603)
    at /vendor.6687942ea70b4222b345.js:1:1558126
    at Array.forEach (native)
    at t.init (/vendor.6687942ea70b4222b345.js:1:1558097)
    at t.play (/vendor.6687942ea70b4222b345.js:1:1558561)
    at t.play (/vendor.6687942ea70b4222b345.js:1:430383)
    at /vendor.6687942ea70b4222b345.js:1:426198
    at Array.forEach (native)
    at t._flushAnimations (/vendor.6687942ea70b4222b345.js:1:426075)

🌍 Your Environment

Angular Version:
Angular: 7.2.8

[pedep]

Duplicate of #24094

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}