Crash on large amounts of a particular Unicode character

[pointydev]

• Electron version: 1.6.12
• Chromium version: 56.0.2924.87
• Node version: 7.4.0
• v8 version: 5.6.326
• Operating system: Windows 10 Pro x64 v1607

Expected behavior

App is stable.

Actual behavior

App becomes unresponsive.

How to reproduce

1. Run an electron instance (I used QS)
2. Open dev tools
3. Paste 1000+ of the following character into any part of the DOM:

'BENGALI VOWEL SIGN VOCALIC LL' (U+09E3) 
ৣ 

4. Client becomes unresponsive, see the following gif

Mainly wanted to post this here for tracking purposes, please see the post on the chromium monorail here: https://bugs.chromium.org/p/chromium/issues/detail?id=757446

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[pointydev]

It seems this may have been fixed in a recent chromium build, see here: https://bugs.chromium.org/p/chromium/issues/detail?id=757446#c21

[pointydev]

@sofianguy Fixed or inactive issue? Would like to forward this to Discord so they can upgrade Electron if fixed.

[sofianguy]

@pointydev No, this is not fixed in Electron yet. My bad, reopening.

[codebytere]

We are no longer implementing bugfixes for versions of Electron <= 1.7.x, so i'm going to close this issue but if it is still persisting in more recent versions of Electron we can certainly reopen it!