Testcase details page has mis-rendered unicode

[alex]

https://oss-fuzz.com/testcase-detail/5471030328688640:

This is on latest CrOS stable channel.

[inferno-chromium]

@iamarshsingh, can you take a look, i think probably coming from your flask migration.

[iamarshsingh]

@iamarshsingh, can you take a look, i think probably coming from your flask migration.

Weird bug, thanks for tagging will have a look.

[oliverchang]

Thanks! This is now fixed.